The Flat Earth Society

Flat Earth Discussion Boards => Flat Earth Debate => Topic started by: prkearther on July 21, 2017, 06:25:29 AM

Title: More Utterly Undeniable Proof of Flat Earth!
Post by: prkearther on July 21, 2017, 06:25:29 AM
Fellow Flat Earthers and respected Globers. I have been working on this experiment for a few months now and believe I have disproved the spinning globe model of our planet, while simultaneously proving the Flat Earth model!

I graduated from the school of engineering and applied sciences at the George Washington University with a degree in Mechanical Engineering and am two years into a PhD at Carnegie Mellon University. I was introduced to the idea of FE by one of my classmates midway through last school year. I’ll admit at first, I was dubious about what she was telling me. After a couple of days of research, however, it all started to make sense. With a few sentences, she had opened up my mind to a level I thought was never possible. How could I have been brainwashed for all these years?

(http://rahipatel.com/Flat_Earth.fld/image002.png)

As time went on, I started realizing that there was a slight disconnect with the FE theories and the scientific methods I was learning in school. A lot of Globers were telling me that if I put these ideas to the “test”, the FE model would not hold up. In my heart though, I knew these ideas were right, and using the scientific methods and theories I have learned over the course of my education, I believe I have proved it! Below, I will describe to you how I did it.
 
*Disclaimer: I apologize to any other Flat Earthers who may have run similar tests. I have done a lot of research on this topic and have not seen anything like it on the web, but I am only human, so I may have missed the articles or blog posts.
 
To understand my method and logic, I must first explain a phenomenon that occurs from the spinning globe model that Globers believe in. If the earth were a spinning ball, centrifugal force would cause the equator to bulge out a little causing cities near the equator to be farther from the center of the earth than cities farther away from the equator. Below is an image to show this:

(http://rahipatel.com/Flat_Earth.fld/image004.png)

The globe on the left is what most Globers imagine the earth to look like. The “scientifically accurate” version of this model looks like the image on the right.
            Now, based on scientists’ theories of gravity, the farther you are from the center of the earth, the lower the acceleration of gravity. Therefore, if I measured the acceleration of gravity at two different locations on the planet, they should be different. BUT WE FLAT EARTHERS KNOW THAT THIS IS PREPOSTEROUS.
Since the earth is flat, it is just accelerating at 9.807 m/s^2 in space creating a uniform gravitational field. This means that if Flat Earth is correct, no matter where I measure the acceleration of gravity, I should get the same value… and that’s exactly what happened. Here is how I went about doing the experiment.

(http://rahipatel.com/Flat_Earth.fld/image006.png)

 I am originally from NY state and that’s where I took my first measurements. I used a condo that my uncle owns in up state New York to run my tests. I used an iPhone 7 video camera to record myself jumping, then analyzed the video frame by frame to measure my acceleration. Below is one of the frames from one of the trials.
 
I propped the phone using a vice and did not move it during all trials for the day. I was sure to mark exactly where everything was relative to everything else before taking my phone for the night. I also knew how far I was jumping from the camera with great accuracy (to within micrometers). I also measured my height to within micrometers. Using these two values, I was able get an extremely accurate value for my height off the ground for each frame. Since I knew the frame rate of the camera, I had a plot of my distance from the ground as a function of time. Using a simple formula, I was able to calculate the acceleration.

 I did this with 100 different jumps to account for random error. I then took a trip out to Indonesia and stayed with some relatives who live very close to the equator to run another 100 jumps. Here are plots of the results:

(http://rahipatel.com/Flat_Earth.fld/image008.png)
(http://rahipatel.com/Flat_Earth.fld/image010.png)

As you can see, the average is 9.807 m/s^2 in both places! I crunched the numbers and if the earth was actually a spinning globe, in the New York state location, I would be 19 km closer to the center of the earth so I should have measured 9.809 m/s^2. While in Indonesia, I should have measured 9.805. As you can see in the zoomed in plots, my data does not hit these values even with random error.
 
I have peer reviewed that data my self and even showed some of my colleagues who agree with me. I urge other Flat Earthers and Globers alike to run similar experiments so we can finally end this nonsensical argument once and for all!
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: InFlatEarth on July 21, 2017, 06:40:37 AM
Nice work, but the wolf pack will find some little thing to discredit you. They will throw everything at you, even the kitchen sink, but my advice, is to put them down with facts and science.

When you use science, they will start pulling rabbits out of the hat.

I too am an ME and believe in the Flat Earth, since it is the only thing that hold up in true science.

I have placed them up against a wall with my last thread,

https://www.theflatearthsociety.org/forum/index.php?topic=71355.0 (https://www.theflatearthsociety.org/forum/index.php?topic=71355.0)

In which I give then two real airports and I ask them to draw me a Free Body Diagram of an airplane landing and to show all the forces, especially the ones that keep the airplane in sync with the ground. So far, I have not had any Free Body Diagrams, because they can’t do the physics.

But I’m curtain that they will pull some Dark Matter energy to try to confuse the subject, because that is what they do. When they are placed on the wall, they will start stating nonsense in order to discourage you.

I suggest, instead of showing the graphs, do some statistical analysis with standard deviations and averages to prove your point with math. It was very smart of you to do 100 jumps. If you need help, send me a message.

Good luck
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Sentinel on July 21, 2017, 07:19:12 AM
Jumping in front of a Iphone 7 camera and then having the balls stating you measured those jumps down to micrometers.
You're an utter disgrace to every proper engineer out there.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: prkearther on July 21, 2017, 07:35:20 AM
Jumping in front of a Iphone 7 camera and then having the balls stating you measured those jumps down to micrometers.
You're an utter disgrace to every proper engineer out there.

I appreciate your comment kind sir or ma'm, but I have spent the past three years of my life doing research to be able to make measurements that precise. You think I had money left for a fancy smancy camera? Self funding is hard.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: prkearther on July 21, 2017, 07:36:09 AM
Nice work, but the wolf pack will find some little thing to discredit you.

So true. Thank you for your comments
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: InFlatEarth on July 21, 2017, 07:42:48 AM
You have seen nothing yet from them, they will hit back even harder...

In another thread I'm trying to get them to calculate what the maximum distance that a single photon can travel, but they refuse to do so. If you ask yourself why, the answer is simple, if a photon can only travel a distance of 1 lightyear, than all this talk of galaxies and stars being many lightyears away is bogus and goes against their religion. To them this is all a religion that they will fight hard for.

If you have any ideas on how to calculate the distance that a signal photon can travel, please tell me.

Good luck,
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Sentinel on July 21, 2017, 07:54:48 AM
Jumping in front of a Iphone 7 camera and then having the balls stating you measured those jumps down to micrometers.
You're an utter disgrace to every proper engineer out there.

I appreciate your comment kind sir or ma'm, but I have spent the past three years of my life doing research to be able to make measurements that precise. You think I had money left for a fancy smancy camera? Self funding is hard.

Don't care what angle you're coming from, but you have to understand that a setup like you did there can't prove shit. Do it again with a reproducable one like dropping a solid ball from a precisley measured height, filmed by a proper high speed camera, and we could talk about the results and if they hold up to the micrometers you've claimed before.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: InFlatEarth on July 21, 2017, 08:02:12 AM
Told you, they will throw everything at you to discredit you.

But this is just the first phase. Once you start writing back, why will find a very small insignificant thing and blow it out of proportion.

Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Alpha2Omega on July 21, 2017, 11:10:22 AM
Fellow Flat Earthers and respected Globers. I have been working on this experiment for a few months now and believe I have disproved the spinning globe model of our planet, while simultaneously proving the Flat Earth model!

I graduated from the school of engineering and applied sciences at the George Washington University with a degree in Mechanical Engineering and am two years into a PhD at Carnegie Mellon University. I was introduced to the idea of FE by one of my classmates midway through last school year. I’ll admit at first, I was dubious about what she was telling me. After a couple of days of research, however, it all started to make sense. With a few sentences, she had opened up my mind to a level I thought was never possible.

She used her feminine wiles on you huh? ;)

Quote
How could I have been brainwashed for all these years?

<image of flat earth> (http://rahipatel.com/Flat_Earth.fld/image002.png)

As time went on, I started realizing that there was a slight disconnect with the FE theories and the scientific methods I was learning in school. A lot of Globers were telling me that if I put these ideas to the “test”, the FE model would not hold up. In my heart though, I knew these ideas were right, and using the scientific methods and theories I have learned over the course of my education, I believe I have proved it! Below, I will describe to you how I did it.

"Prove" is a bit strong, but bravo! for actually running an experiment!

Quote

*Disclaimer: I apologize to any other Flat Earthers who may have run similar tests. I have done a lot of research on this topic and have not seen anything like it on the web, but I am only human, so I may have missed the articles or blog posts.

To understand my method and logic, I must first explain a phenomenon that occurs from the spinning globe model that Globers believe in. If the earth were a spinning ball, centrifugal force would cause the equator to bulge out a little causing cities near the equator to be farther from the center of the earth than cities farther away from the equator. Below is an image to show this:

(http://rahipatel.com/Flat_Earth.fld/image004.png)

The globe on the left is what most Globers imagine the earth to look like. The “scientifically accurate” version of this model looks like the image on the right.
            Now, based on scientists’ theories of gravity, the farther you are from the center of the earth, the lower the acceleration of gravity. Therefore, if I measured the acceleration of gravity at two different locations on the planet, they should be different. BUT WE FLAT EARTHERS KNOW THAT THIS IS PREPOSTEROUS.

"I have done a lot of research on this topic and have not seen anything like it on the web". Really? You came up with nothing at all?

Just out of curiosity, did you review any introductory geophysics or geodesy books while researching the topic? There should be some in the CMU library system; if not, they could no doubt get some for you on loan. At any rate, I'm surprised you didn't find anything about this on Wikipedia (https://en.wikipedia.org/wiki/Gravity_of_Earth#Latitude) and elsewhere (https://physics.stackexchange.com/questions/141856/why-is-earths-gravity-stronger-at-the-poles) with just a web search alone.

The effect you describe is correct, and is actually well established and well known. In fact, you have missed an additional effect which works to lessen the acceleration of gravity at the equator: centrifugal acceleration, and a third which increases it slightly due to the slight change in distribution of mass within the not-quite-spherical earth from your two experiment sites [the stackexchange article explains this pretty well a couple of replies down]. The combined effect of the ellipsoidal shape and rotation of the earth combine to reduce the net acceleration toward the center of the earth by about 0.5% at the equator compared to the poles.

Quote

Since the earth is flat, it is just accelerating at 9.807 m/s^2 in space creating a uniform gravitational field. This means that if Flat Earth is correct, no matter where I measure the acceleration of gravity, I should get the same value… and that’s exactly what happened. Here is how I went about doing the experiment.

(http://rahipatel.com/Flat_Earth.fld/image006.png)

 I am originally from NY state and that’s where I took my first measurements. I used a condo that my uncle owns in up state New York to run my tests. I used an iPhone 7 video camera to record myself jumping, then analyzed the video frame by frame to measure my acceleration. Below is one of the frames from one of the trials.
 
I propped the phone using a vice and did not move it during all trials for the day. I was sure to mark exactly where everything was relative to everything else before taking my phone for the night. I also knew how far I was jumping from the camera with great accuracy (to within micrometers). I also measured my height to within micrometers. Using these two values, I was able get an extremely accurate value for my height off the ground for each frame. Since I knew the frame rate of the camera, I had a plot of my distance from the ground as a function of time. Using a simple formula, I was able to calculate the acceleration.

That's a clever technique but it seems unlikely that you can measure height to the precision claimed. Can we see your calculations? Did you verify the frame rate of your camera?

Quote
I did this with 100 different jumps to account for random error. I then took a trip out to Indonesia and stayed with some relatives who live very close to the equator to run another 100 jumps. Here are plots of the results:

(http://rahipatel.com/Flat_Earth.fld/image008.png)
(http://rahipatel.com/Flat_Earth.fld/image010.png)

As you can see, the average is 9.807 m/s^2 in both places! I crunched the numbers and if the earth was actually a spinning globe, in the New York state location, I would be 19 km closer to the center of the earth so I should have measured 9.809 m/s^2. While in Indonesia, I should have measured 9.805. As you can see in the zoomed in plots, my data does not hit these values even with random error.

By 'average', I presume you are referring to the 'mean'. Did you run any other statistics on the data, like, say, standard deviation?

Using your values, you were looking to detect a change of 0.002 out of almost 10, or about 2 parts in 10,000, so even very small uncertainties must be controlled for, or at least recognized. For instance, what was the height (in pixels) of your average jump? If it was less than 5000 pixels, you don't have the resolution to measure your predicted effect, even presuming you could convert pixels to height exactly, and could determine your height down to the single-pixel level, and your timing was stable to a similar precision.

The formula for acceleration of gravity on the surface of the WGS-84 ellipsoid[nb]https://en.wikipedia.org/wiki/Gravity_of_Earth#Latitude_model (https://en.wikipedia.org/wiki/Gravity_of_Earth#Latitude_model)[/nb] predicts a 0.26% increase in gravitational acceleration at 45° latitude compared to the equator. The northern border of NY is 45° latitude, and gives the largest difference from the equator in the state, so I used that. Also, the (sin(45°))2 terms in the formula are exactly 0.5, which made the number crunching a little easier.

In reality, the effect should be much greater than your analysis predicted, more like 1 part in 400, but you'd still need at least 400 pixels of jump height, under perfect conditions, to have a chance of detecting it.

Can we see your raw data, including the videos, and your calculations?

Quote
I have peer reviewed that data my self and even showed some of my colleagues who agree with me.

Are any of these colleagues geoscientists or physicists (or statisticians)?

Quote
I urge other Flat Earthers and Globers alike to run similar experiments so we can finally end this nonsensical argument once and for all!

There is better equipment available for measuring effects such as this, such as gravimeters (https://en.wikipedia.org/wiki/Gravimeter). As far as I know, CMU doesn't specialize in geosciences, but the geology department (if there is one) may have a gravimeter for use in some of the lab courses; many schools do have them. The typical gravimeter available from the '50s was sensitive enough to estimate the height of multi-story buildings using only measurable changes in the acceleration of gravity; this is a common experiment for intro geophysics labs. They are similarly capable of detecting the change in acceleration due to a change of latitude of as little as a couple hundred meters or less if the measurements are carefully done.

Again, I commend you for taking the time to design and conduct an experiment. The one you describe seems to lack the precision necessary, but more details would be welcome.

[Edit] Clarify 45° as giving greatest change from equator in New York State.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: JackBlack on July 21, 2017, 05:45:43 PM
Firstly, saying more implies there already is some.
There is no proof for a flat Earth.
There is plenty of proof against it though.

Fellow Flat Earthers and respected Globers. I have been working on this experiment for a few months now and believe I have disproved the spinning globe model of our planet, while simultaneously proving the Flat Earth model!
Lots of people have claimed that and completely failed.
It is better to be humble and say you have an experiment, present the results and go through your conclusions (including the reasoning) and then say you think that shows Earth is flat.


To understand my method and logic, I must first explain a phenomenon that occurs from the spinning globe model that Globers believe in. If the earth were a spinning ball, centrifugal force would cause the equator to bulge out a little causing cities near the equator to be farther from the center of the earth than cities farther away from the equator. Below is an image to show this:
Yes, a very small amount.

Now, based on scientists’ theories of gravity, the farther you are from the center of the earth, the lower the acceleration of gravity. Therefore, if I measured the acceleration of gravity at two different locations on the planet, they should be different.
Yes, that is true. And that is also what happens.
Other things can also cause variations in gravity, such as the distribution of mass. This can even be used to survey what is under the ground such as finding oil deposits based upon a difference in density and thus mass and thus gravity.

BUT WE FLAT EARTHERS KNOW THAT THIS IS PREPOSTEROUS.
Really?
I know it to be a fact, a fact which requires calibrating scales based upon location to account for gravity and even calibrating pendulum clocks.
FEers need it to be preposterous for their model to hold. They don't know it, they just want it to be true.

This means that if Flat Earth is correct, no matter where I measure the acceleration of gravity, I should get the same value… and that’s exactly what happened. Here is how I went about doing the experiment.
And it is exactly NOT what numerous others have done.
Instead numerous others have mapped variations in gravity and found it to very from location to location.

However, if you just measure rather rough values, you can get them the same.


I propped the phone using a vice and did not move it during all trials for the day. I was sure to mark exactly where everything was relative to everything else before taking my phone for the night. I also knew how far I was jumping from the camera with great accuracy (to within micrometers). I also measured my height to within micrometers. Using these two values, I was able get an extremely accurate value for my height off the ground for each frame. Since I knew the frame rate of the camera, I had a plot of my distance from the ground as a function of time. Using a simple formula, I was able to calculate the acceleration.
An iPhone camera cannot record to micrometer accuracy, so you are already lying.
An iphone 7 with its 12 MP camera has a maximum resolution of 4200 pixels.
Assuming that was measuring you similar to the photo you provided (which appears you chose the shorter 2800 pixels instead of 4200, but I'll ignore that), and you just wanted to get your entire height in, that gives you roughly 2 m for 4200 pixels. That means each each pixel is roughly 0.5 mm. That is not within micrometers.

The frame rate can also vary.
So you have a very large error.

You didn't even explain what you did to calculate the acceleration due to gravity.

I did this with 100 different jumps to account for random error. I then took a trip out to Indonesia and stayed with some relatives who live very close to the equator to run another 100 jumps. Here are plots of the results:
You are looking for an average, so that isn't the right way to plot it in the first place.
Regardless, I see a plot with a bunch of points and a red line.
A better way to show this would be with a list of the points and an average.
But more importantly, WHAT IS YOUR ERROR?

I have peer reviewed that data my self
That is not peer review.
That is self review.

even showed some of my colleagues who agree with me.
i.e. the ones that were already FEers? Did you just show the data or also the methodology?

I urge other Flat Earthers and Globers alike to run similar experiments so we can finally end this nonsensical argument once and for all!
Without expensive equipment I would not be able to measure i accurately enough to tell.
As such, it is rather pointless me trying.
Instead I will look at other things, like time zones, sunrises and sunsets and so on which clearly indicate Earth is round.


I appreciate your comment kind sir or ma'm, but I have spent the past three years of my life doing research to be able to make measurements that precise. You think I had money left for a fancy smancy camera? Self funding is hard.
Unless you can show how, I'm calling bullshit, as it is physically impossible to measure to that degree of accuracy using that camera showing that much.
Tell us your exact methodology.
Tell us exactly what you measured and how.
Tell us what calculations you then did.
Tell us how you determined your camera's frame rate, including what it actually uses and what effects things like temperature might have on that.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: JackBlack on July 21, 2017, 05:47:40 PM
Told you, they will throw everything at you to discredit you.

But this is just the first phase. Once you start writing back, why will find a very small insignificant thing and blow it out of proportion.
You mean what you are doing in the other thread, completely ignoring the argument and focusing on a very small and false thing and trying to blow it out of proportion to pretend you are right, or in the other one where you are demanding a FBD which is completely unneeded as people have explained the forces involved.

If you have any ideas on how to calculate the distance that a signal photon can travel, please tell me.
As you have been told, the formula is quite simple:
distance=infinite.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: telsarbg on July 21, 2017, 06:33:57 PM
prkearther The subject has been studied extensively, it is called gravimetry. We have complete maps of the gravity variation on the surface of the Earth, such as this one :
(http://frederic.chambat.free.fr/geophy/gravity_maps/dg.Chaxbyd0.jpg)

You don't need to take pictures with your iPhone. There are portable devices to measure local gravity with great accuracy, called gravimeters :
(https://upload.wikimedia.org/wikipedia/commons/thumb/3/31/Autograv_CG5_P1150838.JPG/220px-Autograv_CG5_P1150838.JPG)

Quote
A gravimeter is an instrument used in gravimetry for measuring the local gravitational field of the Earth. A gravimeter is a type of accelerometer, specialized for measuring the constant downward acceleration of gravity, which varies by about 0.5% over the surface of the Earth.

I doubt the camera of an iPhone has a margin of error less than 0.5% ... Gravimeters can be bought by private individuals, although they are pretty expensive ($75000 for the model pictured above) :
https://rtclark.com/product/scintrex-cg-5-gravity-meter (https://rtclark.com/product/scintrex-cg-5-gravity-meter)

You should also note that gravitaty variations can be observed because of altitude, not only because of the oblate shape of the Earth. It might be easier to go to the mountains than near the equator.

Edit : That also means that if you go near the equator, you still have to correct for altitude.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: onebigmonkey on July 21, 2017, 10:39:08 PM
For someone supposedly 2 years into a PhD you have no idea what peer review is and you really should reference the model by which you are calculating your difference from the earth''s centre.

What confidence intervals have you calculated and what's your value of people?

In other words cool story Bro,  but nah.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: rabinoz on July 22, 2017, 01:53:13 AM
These videos are relevant to this topic.
In the first a set of high quality (force neasuring) scales are calibrated with a 500 g mass in Perth, Australia then taken to other locations.

Flat Earth vs Globe - Does weight change with Latitude? Is this evidence the Earth is spinning?
Perth:        Lat 31°57.64'S Weight=500.00 g
Canberra: Lat 35°18.55'S Weight=500.16 g
Perth:        Lat 31°57.64'S Weight=500.00 g, return
Broome:   Lat 17°57.07'S Weight=499.44 g

The second video shows a similar measurement on an aircraft flying nearly east than nearly west,
again showing a difference in weight, depending on the direction,
Quote
The Eötvös effect is the change in perceived gravitational force caused by the change in centrifugal acceleration resulting from eastbound or westbound velocity.

Flat Earth vs Globe - The Eötvös effect observed in aircraft - how does it affect Gravity?
I hope you find them of interest.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: InFlatEarth on July 22, 2017, 02:00:54 AM
These videos are relevant to this topic.
In the first a set of high quality (force neasuring) scales are calibrated with a 500 g mass in Perth, Australia then taken to other locations.

Flat Earth vs Globe - Does weight change with Latitude? Is this evidence the Earth is spinning?
Perth:        Lat 31°57.64'S Weight=500.00 g
Canberra: Lat 35°18.55'S Weight=500.16 g
Perth:        Lat 31°57.64'S Weight=500.00 g, return
Broome:   Lat 17°57.07'S Weight=499.44 g

The second video shows a similar measurement on an aircraft flying nearly east than nearly west,
again showing a difference in weight, depending on the direction,
Quote
The Eötvös effect is the change in perceived gravitational force caused by the change in centrifugal acceleration resulting from eastbound or westbound velocity.

Flat Earth vs Globe - The Eötvös effect observed in aircraft - how does it affect Gravity?
I hope you find them of interest.

Since phones are not acceptable instruments for testing, then the video has to be disregarded as to where his location is, since is based on an iPhone and not an expensive machinery that cost thousands of dollars.

Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Kami on July 22, 2017, 02:58:22 AM
Resolution of Iphone 7 video camera: 4k at 30fps, meaning 3840x2160 pixel. I am assuming you used the 3840 pixel to measure your height (the picture you posted looks like you used the 2160 pixel, but let's go with the higher value). I will assume that you are about 1.80m in height, so you would need to have a camera frame of at least 1.92m (probably even more as you jump more than 12cm, but this number is convenient).

This means that one pixel covers at least 1.92m/3840=0.5mm = 500 micrometer.

So even if you have a perfectly sharp image (which is completely unrealistic) and could perfectly determine your height in pixels you would still only achieve a resolution 500 times worse than that you claimed. And I am not even beginning to talk about the finite resolution in time induced by the 30 frames per second, or the motion blur induced by finite exposure time.

As someone who actually works in science (i.e. a peer) I can assure you that your experiment by no means follows scientific methods. With your method it is impossible to achieve the resolution you claim, which means that your whole data are worthless (or even faked).
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Kami on July 22, 2017, 03:23:00 AM
Just because I am bored:

What did you define as your time of landing? The moment your feet touch the ground? Which part of the feet? Are you absolutely confident you held your feet exactly the same way up to one micrometer (1/50th of the diameter of a human hair)?

Same applied for the start time of the jump as well, of course.

Even if we say that you could do that all, perfectly. Say your jump takes 2 second, i.e. 60 frames. This means that you have an error due to finite time resolution alone of 2/60, i.e. 3.3% (that is if you can perfectly and consistently define the starting and landing frame). You want to measure a change of the order 1/400 where you have a systematic error of 3.3% due to one aspect alone? Good luck!

I do not believe that you are doing a PhD somewhere. If so, please reconsider your carrer choices. Your work is by no means scientific and you likely faked your entire data.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Lonegranger on July 22, 2017, 03:31:05 AM
Fellow Flat Earthers and respected Globers. I have been working on this experiment for a few months now and believe I have disproved the spinning globe model of our planet, while simultaneously proving the Flat Earth model!

I graduated from the school of engineering and applied sciences at the George Washington University with a degree in Mechanical Engineering and am two years into a PhD at Carnegie Mellon University. I was introduced to the idea of FE by one of my classmates midway through last school year. I’ll admit at first, I was dubious about what she was telling me. After a couple of days of research, however, it all started to make sense. With a few sentences, she had opened up my mind to a level I thought was never possible. How could I have been brainwashed for all these years?

(http://rahipatel.com/Flat_Earth.fld/image002.png)

As time went on, I started realizing that there was a slight disconnect with the FE theories and the scientific methods I was learning in school. A lot of Globers were telling me that if I put these ideas to the “test”, the FE model would not hold up. In my heart though, I knew these ideas were right, and using the scientific methods and theories I have learned over the course of my education, I believe I have proved it! Below, I will describe to you how I did it.
 
*Disclaimer: I apologize to any other Flat Earthers who may have run similar tests. I have done a lot of research on this topic and have not seen anything like it on the web, but I am only human, so I may have missed the articles or blog posts.
 
To understand my method and logic, I must first explain a phenomenon that occurs from the spinning globe model that Globers believe in. If the earth were a spinning ball, centrifugal force would cause the equator to bulge out a little causing cities near the equator to be farther from the center of the earth than cities farther away from the equator. Below is an image to show this:

(http://rahipatel.com/Flat_Earth.fld/image004.png)

The globe on the left is what most Globers imagine the earth to look like. The “scientifically accurate” version of this model looks like the image on the right.
            Now, based on scientists’ theories of gravity, the farther you are from the center of the earth, the lower the acceleration of gravity. Therefore, if I measured the acceleration of gravity at two different locations on the planet, they should be different. BUT WE FLAT EARTHERS KNOW THAT THIS IS PREPOSTEROUS.
Since the earth is flat, it is just accelerating at 9.807 m/s^2 in space creating a uniform gravitational field. This means that if Flat Earth is correct, no matter where I measure the acceleration of gravity, I should get the same value… and that’s exactly what happened. Here is how I went about doing the experiment.

(http://rahipatel.com/Flat_Earth.fld/image006.png)

 I am originally from NY state and that’s where I took my first measurements. I used a condo that my uncle owns in up state New York to run my tests. I used an iPhone 7 video camera to record myself jumping, then analyzed the video frame by frame to measure my acceleration. Below is one of the frames from one of the trials.
 
I propped the phone using a vice and did not move it during all trials for the day. I was sure to mark exactly where everything was relative to everything else before taking my phone for the night. I also knew how far I was jumping from the camera with great accuracy (to within micrometers). I also measured my height to within micrometers. Using these two values, I was able get an extremely accurate value for my height off the ground for each frame. Since I knew the frame rate of the camera, I had a plot of my distance from the ground as a function of time. Using a simple formula, I was able to calculate the acceleration.

 I did this with 100 different jumps to account for random error. I then took a trip out to Indonesia and stayed with some relatives who live very close to the equator to run another 100 jumps. Here are plots of the results:

(http://rahipatel.com/Flat_Earth.fld/image008.png)
(http://rahipatel.com/Flat_Earth.fld/image010.png)

As you can see, the average is 9.807 m/s^2 in both places! I crunched the numbers and if the earth was actually a spinning globe, in the New York state location, I would be 19 km closer to the center of the earth so I should have measured 9.809 m/s^2. While in Indonesia, I should have measured 9.805. As you can see in the zoomed in plots, my data does not hit these values even with random error.
 
I have peer reviewed that data my self and even showed some of my colleagues who agree with me. I urge other Flat Earthers and Globers alike to run similar experiments so we can finally end this nonsensical argument once and for all!

You are joking? If your not then you are both a liar and an ass squeak.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: InFlatEarth on July 22, 2017, 04:10:03 AM
The wolf pack has moved on the next stage of making fun of you and calling you names.

If they would truly interested in your work, they would ask for the data readings themselves. It is funny how they can prove you wrong, without ever looking at the actual numbers of your experiment.



Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Kami on July 22, 2017, 04:15:31 AM
See my posts. I have used the technical specifications of the camera he said he used, plus the one photo he provided. I did not need anything else to prove that his 'experiment' is bullcrap or a lie.

There is no need to invest additional time in that, as the measurements he claimed to make are impossible under the conditions he described.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: JimmyTheCrab on July 22, 2017, 04:18:06 AM
Christ, can none of you see a good joke?   :P
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Kami on July 22, 2017, 04:21:06 AM
I just get triggered by people claiming to be engineers/PhD's and then clearly proving that they are not  :(
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: JimmyTheCrab on July 22, 2017, 04:23:02 AM
I just get triggered by people claiming to be engineers/PhD's and then clearly proving that they are not  :(
I've no idea if he is or not, but it's fucking obvious piece of satire.

Quote
I have peer reviewed that data my self
Clearly humorous.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: InFlatEarth on July 22, 2017, 04:25:52 AM
See my posts. I have used the technical specifications of the camera he said he used, plus the one photo he provided. I did not need anything else to prove that his 'experiment' is bullcrap or a lie.

There is no need to invest additional time in that, as the measurements he claimed to make are impossible under the conditions he described.

But you take the time to attack all topics that go against he Heliocentric model...
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Lonegranger on July 22, 2017, 05:09:41 AM
The wolf pack has moved on the next stage of making fun of you and calling you names.

If they would truly interested in your work, they would ask for the data readings themselves. It is funny how they can prove you wrong, without ever looking at the actual numbers of your experiment.

That's because the guy is a jack ass and is no way doing a PhD in engineering......self peer review...give me a break?

I challenge this goon to provide evidence of the department he is in and his prof who is overseeing his project. He could also give us some info of his area of research. As he is in his 2nd year he must have contributed to some published papers, links to these would be good. Going by what he has provided so far the possibility of him being a PhD student is nil!
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: JackBlack on July 22, 2017, 05:43:48 AM
Since phones are not acceptable instruments for testing, then the video has to be disregarded as to where his location is, since is based on an iPhone and not an expensive machinery that cost thousands of dollars.
Who said they aren't acceptable instruments?
They just have lower resolution.
They claimed micrometer accuracy. That is impossible.
The description of the video by Rab is giving it to within a city.
That is quite possible to do with a phone.

So no, there is no rational reason to disregard it.

Stop making pathetic strawmen. Either make a rational argument or fuck off.

If they would truly interested in your work, they would ask for the data readings themselves. It is funny how they can prove you wrong, without ever looking at the actual numbers of your experiment.
You mean like I did?
And yes, we can prove him wrong, looking at the physical limitations of his experiment.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: InFlatEarth on July 22, 2017, 05:52:42 AM
The wolf pack has moved on the next stage of making fun of you and calling you names.

If they would truly interested in your work, they would ask for the data readings themselves. It is funny how they can prove you wrong, without ever looking at the actual numbers of your experiment.

That's because the guy is a jack ass and is no way doing a PhD in engineering......self peer review...give me a break?

I challenge this goon to provide evidence of the department he is in and his prof who is overseeing his project. He could also give us some info of his area of research. As he is in his 2nd year he must have contributed to some published papers, links to these would be good. Going by what he has provided so far the possibility of him being a PhD student is nil!

OK, but first your credentials...

Who do you work for, pay stubs,

Your Degrees and transcripts, because we got to know if we are talking with a 4.0 student or a 2.0 student
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Kami on July 22, 2017, 06:35:07 AM
See my posts. I have used the technical specifications of the camera he said he used, plus the one photo he provided. I did not need anything else to prove that his 'experiment' is bullcrap or a lie.

There is no need to invest additional time in that, as the measurements he claimed to make are impossible under the conditions he described.

But you take the time to attack all topics that go against he Heliocentric model...

Just when I am procrastinating. Also, not all, just the ones that trigger me  ;D

So you accept that this experiment is utter bullshit and it is impossible with the given equipment to make such precise calculations? Good.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: InFlatEarth on July 22, 2017, 06:40:14 AM
See my posts. I have used the technical specifications of the camera he said he used, plus the one photo he provided. I did not need anything else to prove that his 'experiment' is bullcrap or a lie.

There is no need to invest additional time in that, as the measurements he claimed to make are impossible under the conditions he described.

But you take the time to attack all topics that go against he Heliocentric model...

Just when I am procrastinating. Also, not all, just the ones that trigger me  ;D

So you accept that this experiment is utter bullshit and it is impossible with the given equipment to make such precise calculations? Good.


I have to see the numerical data first, but I'm not interested if the data is precise, but it is accurate and if you had an engineering degree you would know the difference!
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Kami on July 22, 2017, 06:49:27 AM
See my posts. I have used the technical specifications of the camera he said he used, plus the one photo he provided. I did not need anything else to prove that his 'experiment' is bullcrap or a lie.

There is no need to invest additional time in that, as the measurements he claimed to make are impossible under the conditions he described.

But you take the time to attack all topics that go against he Heliocentric model...

Just when I am procrastinating. Also, not all, just the ones that trigger me  ;D

So you accept that this experiment is utter bullshit and it is impossible with the given equipment to make such precise calculations? Good.


I have to see the numerical data first, but I'm not interested if the data is precise, but it is accurate and if you had an engineering degree you would know the difference!

Never said I had one. I have one in math and one in physics. And I know that for a decent experiment you need both accuracy and precision.

I am just saying that when your systematic errors are 10 times (in time) or 100 times (in pixel precisions) higher than the value that needs to be measured then you have a huge problem. You could maybe circumvent that by taking a large number of measurements (I am talking far more than 100, it would have to be at least 10.000 or so), but alone looking at the photo you see that his legs are not perfectly straight. As you can not assume that he moves exactly the same during each jump there are errors of cm-level induced by that. Even if your bias was exactly zero you would need an insane amount of measurements to account for that.

Then you look at his figures and see that the values measured between jumps deviate only by about 0.5%, which is simply impossible as you can only determine the value up to 3.3% due to finite number of frames. In addition to that he claimed to have measured micrometer-level precision, which is simply impossible with his equipment. The only conclusion you can draw is that the data are faked.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: JackBlack on July 22, 2017, 06:56:53 AM
I have to see the numerical data first, but I'm not interested if the data is precise, but it is accurate and if you had an engineering degree you would know the difference!
I care about both.

For this experiment, accuracy without precision is pointless.
It would be akin to saying in both location the acceleration due to gravity was (10+-0.5) m/s^2.
That would be accurate. It gets the correct value. But it isn't precise enough to determine if they are actually the same at those 2 locations or just the same within error.

I also need to see his methodology to see if it is that precise.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: InFlatEarth on July 22, 2017, 07:04:23 AM
See my posts. I have used the technical specifications of the camera he said he used, plus the one photo he provided. I did not need anything else to prove that his 'experiment' is bullcrap or a lie.

There is no need to invest additional time in that, as the measurements he claimed to make are impossible under the conditions he described.

But you take the time to attack all topics that go against he Heliocentric model...

Just when I am procrastinating. Also, not all, just the ones that trigger me  ;D

So you accept that this experiment is utter bullshit and it is impossible with the given equipment to make such precise calculations? Good.


I have to see the numerical data first, but I'm not interested if the data is precise, but it is accurate and if you had an engineering degree you would know the difference!

Never said I had one. I have one in math and one in physics. And I know that for a decent experiment you need both accuracy and precision.

I am just saying that when your systematic errors are 10 times (in time) or 100 times (in pixel precisions) higher than the value that needs to be measured then you have a huge problem. You could maybe circumvent that by taking a large number of measurements (I am talking far more than 100, it would have to be at least 10.000 or so), but alone looking at the photo you see that his legs are not perfectly straight. As you can not assume that he moves exactly the same during each jump there are errors of cm-level induced by that. Even if your bias was exactly zero you would need an insane amount of measurements to account for that.

Then you look at his figures and see that the values measured between jumps deviate only by about 0.5%, which is simply impossible as you can only determine the value up to 3.3% due to finite number of frames. In addition to that he claimed to have measured micrometer-level precision, which is simply impossible with his equipment. The only conclusion you can draw is that the data are faked.

In your opinion, for an experiment be to be valid, to how many decimal places must the reading be?

If somebody was measuring the height of an object, that was 2 meter tall, how many decimal places must he measure to, cm, mm...

But remember with your answer, you will claim that all experiments that we conducted without this extend, are bogus!

If you will not answer because you don't know, then your statement of this experiment not being valid is bogus!!!
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: JackBlack on July 22, 2017, 07:11:13 AM
In your opinion, for an experiment be to be valid, to how many decimal places must the reading be?
That depends upon what you are trying to prove.

If somebody was measuring the height of an object, that was 2 meter tall, how many decimal places must he measure to, cm, mm...
Again, it depends upon what you are trying to prove.
If you are trying to prove these 2 objects are the same and thus a hypothesis which says they are a few micrometers different is false, then you need it to within a micrometer.
If you are trying to prove it was 2 m tall, then a few cm would be fine.

But remember with your answer, you will claim that all experiments that we conducted without this extend, are bogus!
No I won't, because I realise the precision needed will vary depending upon what you are trying to do.

A ball bearing needs much greater precision than a kids toy of putting a rod through a hole.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Kami on July 22, 2017, 07:11:40 AM
See my posts. I have used the technical specifications of the camera he said he used, plus the one photo he provided. I did not need anything else to prove that his 'experiment' is bullcrap or a lie.

There is no need to invest additional time in that, as the measurements he claimed to make are impossible under the conditions he described.

But you take the time to attack all topics that go against he Heliocentric model...

Just when I am procrastinating. Also, not all, just the ones that trigger me  ;D

So you accept that this experiment is utter bullshit and it is impossible with the given equipment to make such precise calculations? Good.


I have to see the numerical data first, but I'm not interested if the data is precise, but it is accurate and if you had an engineering degree you would know the difference!

Never said I had one. I have one in math and one in physics. And I know that for a decent experiment you need both accuracy and precision.

I am just saying that when your systematic errors are 10 times (in time) or 100 times (in pixel precisions) higher than the value that needs to be measured then you have a huge problem. You could maybe circumvent that by taking a large number of measurements (I am talking far more than 100, it would have to be at least 10.000 or so), but alone looking at the photo you see that his legs are not perfectly straight. As you can not assume that he moves exactly the same during each jump there are errors of cm-level induced by that. Even if your bias was exactly zero you would need an insane amount of measurements to account for that.

Then you look at his figures and see that the values measured between jumps deviate only by about 0.5%, which is simply impossible as you can only determine the value up to 3.3% due to finite number of frames. In addition to that he claimed to have measured micrometer-level precision, which is simply impossible with his equipment. The only conclusion you can draw is that the data are faked.

In your opinion, for an experiment be to be valid, to how many decimal places must the reading be?

If somebody was measuring the height of an object, that was 2 meter tall, how many decimal places must he measure to, cm, mm...

But remember with your answer, you will claim that all experiments that we conducted without this extend, are bogus!

If you will not answer because you don't know, then your statement of this experiment not being valid is bogus!!!

If I claim that a value should be 9.806 in one place and 9.803 in another, then I would want a precision of about 0.003. A less precise experiment would be fine if many repetitions were done. It all depends on your likelihood function in the end. I would want to get a result of 9.806 +- 0.001 to have a 3-sigma significance.

It depends on the required precision, which is very high here. Do you honestly think that the data presented could have been obtained with the methods he used?
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: JimmyTheCrab on July 22, 2017, 07:18:46 AM
You're all debating a joke.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: InFlatEarth on July 22, 2017, 07:21:38 AM
In your opinion, for an experiment be to be valid, to how many decimal places must the reading be?
That depends upon what you are trying to prove.

If somebody was measuring the height of an object, that was 2 meter tall, how many decimal places must he measure to, cm, mm...
Again, it depends upon what you are trying to prove.
If you are trying to prove these 2 objects are the same and thus a hypothesis which says they are a few micrometers different is false, then you need it to within a micrometer.
If you are trying to prove it was 2 m tall, then a few cm would be fine.

But remember with your answer, you will claim that all experiments that we conducted without this extend, are bogus!
No I won't, because I realise the precision needed will vary depending upon what you are trying to do.

A ball bearing needs much greater precision than a kids toy of putting a rod through a hole.

My mistake, let me clarify my question, To what percentage of the objects height must a person be accurate in making his readings, 99%, 99.9% , 99,99999%
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Kami on July 22, 2017, 07:26:02 AM
My mistake, let me clarify my question, To what percentage of the objects height must a person be accurate in making his readings, 99%, 99.9% , 99,99999%

That depends on your required precision. You can not make a general statement about that.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: InFlatEarth on July 22, 2017, 07:29:45 AM
My mistake, let me clarify my question, To what percentage of the objects height must a person be accurate in making his readings, 99%, 99.9% , 99,99999%

That depends on your required precision. You can not make a general statement about that.

OK, for this example, what % accuracy would you expect his readings to be.

And how can people disregard this work, without even looking at the numerical data
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Kami on July 22, 2017, 07:44:44 AM
He presented the numerical data in the plots. I say that the accuracy displayed there can not be achieved with his equipment.

I would expect the precision of the results to be of order 5-10%, but this is just a rough guess and definitely depends on the used method.
As he wants to determine a 0.25% difference (at most), I would want an accuracy at this order of magnitude.

But please be honest with youself: Do you really think the obtained data with only 0.5% deviation can be obtained with an iphone 7 video camera and a person jumping?
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: prkearther on July 22, 2017, 07:50:41 AM
He presented the numerical data in the plots. I say that the accuracy displayed there can not be achieved with his equipment.

I would expect the precision of the results to be of order 5-10%, but this is just a rough guess and definitely depends on the used method.
As he wants to determine a 0.25% difference (at most), I would want an accuracy at this order of magnitude.

But please be honest with youself: Do you really think the obtained data with only 0.5% deviation can be obtained with an iphone 7 video camera and a person jumping?
I am actually curious in your honest answer InFlatEarth. If you guys want more, here is the matlab code I used to "analyze" the data:

fake = zeros(1,100);
fake(1:100) = 9.807;
fluc =  rand([2 100]);
fluc2 =  (fluc-0.5)./1000;
data = fluc2+9.807
trial = 1:1:100;
figure(1)
plot(trial,data(1,:),'b-o')
title('New York State');
xlabel('Trial Number');
ylabel('Acceleration of Gravity');
hold on
plot(trial,fake,'r');
legend('Measured Values','Average');
figure(2)
plot(trial,data(2,:),'b-o')
title('Indonesia');
xlabel('Trial Number');
ylabel('Acceleration of Gravity');
hold on
plot(trial,fake,'r');
legend('Measured Values','Average');

I apologize to the people who put effort into showing me the flaws in my "methods". I did learn about the existence of a gravimeter from you guys though. InFlatEarth, I appreciate you defending me, but your defenses don't really make any sense. I did graduate from GW but I have not been a PhD student for two years. In truth, I just graduated College and am starting my PhD at CMU this fall. In the words of my favorite cartoon character ever, "I just got bored. Everybody out." ... JimmyTheCrab probably gets that reference ;)
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: InFlatEarth on July 22, 2017, 07:53:00 AM
He presented the numerical data in the plots. I say that the accuracy displayed there can not be achieved with his equipment.

I would expect the precision of the results to be of order 5-10%, but this is just a rough guess and definitely depends on the used method.
As he wants to determine a 0.25% difference (at most), I would want an accuracy at this order of magnitude.

But please be honest with youself: Do you really think the obtained data with only 0.5% deviation can be obtained with an iphone 7 video camera and a person jumping?

I don't know, the iPhones are good telephones, but I use Android.

Let me put it to you this way, the camera on the iPhone is much better video cameras then the ones costing thousands of dollars 30 years ago. So with this logic, the measuring instruments of the iPhone will be just as good as the measuring instruments of 30 years ago.

If you discard the measurement, then you also have to discard all measurement before 30 years ago also.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Kami on July 22, 2017, 07:57:37 AM
I am relieved. I hope you appreciated the feeding.

InFlatEarth: Instruments are designed for specific purposes. For this purpose, the instrument of choice would not have been precise enough.

Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Badxtoss on July 22, 2017, 10:26:05 AM
He presented the numerical data in the plots. I say that the accuracy displayed there can not be achieved with his equipment.

I would expect the precision of the results to be of order 5-10%, but this is just a rough guess and definitely depends on the used method.
As he wants to determine a 0.25% difference (at most), I would want an accuracy at this order of magnitude.

But please be honest with youself: Do you really think the obtained data with only 0.5% deviation can be obtained with an iphone 7 video camera and a person jumping?

I don't know, the iPhones are good telephones, but I use Android.

Let me put it to you this way, the camera on the iPhone is much better video cameras then the ones costing thousands of dollars 30 years ago. So with this logic, the measuring instruments of the iPhone will be just as good as the measuring instruments of 30 years ago.

If you discard the measurement, then you also have to discard all measurement before 30 years ago also.
Dude the experiment was a joke
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: JackBlack on July 22, 2017, 04:22:26 PM
My mistake, let me clarify my question, To what percentage of the objects height must a person be accurate in making his readings, 99%, 99.9% , 99,99999%
Your question is fine, you are just ignoring the answer.
Here, let me try and clarify it:
IT DEPENDS ENTIRELY UPON WHAT YOU ARE TRYING TO DO WITH IT!!!
If you are looking for a change of 1% (a direct change), then it would need to be within less than that 1%, preferably 0.1%. If you are looking for a change of 0.00001%, then you need better than that.

Do you understand that?

OK, for this example, what % accuracy would you expect his readings to be.

And how can people disregard this work, without even looking at the numerical data
That would depend upon his exact methodology, i.e. exactly what he is measuring and calculating.

We can disregard his work because he blatantly lied about the accuracy he had.
He claimed to have had micrometer accuracy when in fact the best he could do is half a mm (or 500 times what he claims).

As he has now admitted the data was fake, I can provide a method by which you could do something like this:

We know that just considering the vertical component, a=-g (for simplicity, you could have it as g as well, it is just the direction that changes)
v=v0-g
d=d0+v0*t-0.5*g*t^2.

So the simplest way is to measure 3 points in time.
You have the first, which we define at t0, at which point the object is at d0 and v0.
You have some small time later, t1, at which point the object is at d1=d0+v0*t1-0.5*g*t1^2
And you have another time, t2, at which the object is at d2=d0+v0*t2-0.5*g*t2^2.
We are really looking at the differences in distance, so what we have is:
dd1=v0*t1-0.5*g*t1^2
dd2=v0*t2-0.5*g*t2^2

We directly measure d0, d1 and d2, and then use the difference to find dd1 and dd2, and we measure t1 and t2, but there is also the error in the start.
This means the error is doubled for each.

But at least we now have 2 equations with 2 unknowns (v0 and g).
Well, using the first one:
dd1=v0*t1-0.5*g*t1^2
Thus v0*t1=dd1+0.5*g*t1^2
Thus v0=dd1/t1+0.5*g*t1

Now stick that it 2:
dd2=v0*t2-0.5*g*t2^2
Thus 0.5*g*t2^2=v0*t2-dd2
Thus 0.5*g*t2^2=(dd1/t1+0.5*g*t1)*t2-dd2
Thus 0.5*g*t2^2=dd1*t2/t1+0.5*g*t1*t2-dd2
Thus 0.5*g*t2^2-0.5*g*t1*t2=dd1*t2/t1-dd2
Thus g*0.5*t2*(t2-t1)=dd1*t2/t1-dd2
Thus g=2*(dd1*t2/t1-dd2)/(t2*(t2-t1))
Thus g=2*(dd1/t1-dd2/t2)/(t2-t1)

So, now analysing the error, bit by bit.
So on the bottom we have (t2-t1).
In reality this is (t2-t0)-(t1-t0)=t2-t0-t1+t0=t2-t1.
Thus it is just twice the initial error in time.
Up top we have dd1/t1 (and dd1/t2) Because of that you need to use the percentage errors, and as they are uncorrelated, you add the errors in quadriture.
So now we have the error for that part is sqrt(pEd^2+pEt^2).
You then effecitvely multiply it by 2 as it is added together (and assuming the pE is similar for both).
You then have it getting combined together so you add the percentage errors (I think in quadrature):
So peG=sqrt(pEtop^2+pEbot^2)=sqrt((2*(Ed/t)/(d(d/t))^2+(2*Et/dt)^2)
=sqrt((2*(sqrt(pEd^2+pEt^2))^2+(2*Et/dt)^2)
=sqrt((2*(pEd^2+pEt^2)+(2*Et/dt)^2)
=sqrt((2*((Ed/d)^2+(Et/t)^2)+(2*Et/dt)^2)
=sqrt(2*(Ed/d)^2+2*(Et/t)^2+4*(Et/dt)^2)

And the difference he was looking for was 9.807 vs 9.809, so a difference of 0.002 out of 9.807 or roughly 0.02%, so you would want the error down to something like 0.005% or 0.00005

This means we have:
0.00005=sqrt(2*(Ed/d)^2+2*(Et/t)^2+4*(Et/dt)^2)

So first, lets assume the error in time is 0.
That makes it a lot simpler:
0.00005=sqrt(2*(Ed/d)^2)
=sqrt(2)*(Ed/d)
So Ed/d=0.00005/sqrt(2)
So Ed=d*0.00005*sqrt(2)/2
So assuming the jump was 1m, the maximum you can get for d is 1 m.
So the error is 0.5 m*0.00005*sqrt(2)=3.5 e-5 m=35 micron.

That is not achievable with that camera.
Thus the result must be fake, even without looking into it further.

So you want an instrument which gives at least a 35 micron resolution. When you factor in the error with time the requirements are even tighter.

Let me put it to you this way, the camera on the iPhone is much better video cameras then the ones costing thousands of dollars 30 years ago. So with this logic, the measuring instruments of the iPhone will be just as good as the measuring instruments of 30 years ago.

If you discard the measurement, then you also have to discard all measurement before 30 years ago also.
No.
We are discarding using an iphone (just the iphone) to measure a jump to within micrometer accuracy.

I will discard using a camera from 30+years in the past to do that.
That doesn't mean I have to discard other instruments or techniques.

The iphone is not as good as other instruments.

The iphone camera is for taking pictures, not measuring gravity or distances to micrometer accuracy.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: cpmor13 on July 23, 2017, 08:25:12 PM
I will attempt to answer your question with as much patience as possible, as it is taking all my power to not throw my computer out the window after reading this question. (By the way, my computer would fall thanks to gravity)

Quote
Since the earth is flat, it is just accelerating at 9.807 m/s^2 in space creating a uniform gravitational field

You do realize that if the Earth is just moving up at 9.8 m/s^2, that in about a year the Earth would be moving the speed of light? Unless you are going to begin to question the validity of quantum physics and relativity as well, and assume that mass can travel millions of times the speed of light, then the flat Earth idea is debunked here.

Quote
If the earth were a spinning ball, centrifugal force would cause the equator to bulge out a little causing cities near the equator to be farther from the center of the earth than cities farther away from the equator. Below is an image to show this:

This is correct. No scientist will deny the fact that the Earth is slightly bulged. But the bulge is so small relative to the Earth that if you are far enough away to take a photo of the whole planet, you would see nothing. Surely you would not see a bulge represented in your photo. Because of how relatively small the bulge is the the overall mass and circumference of the Earth, difference in gravity is negligible up to 0.001%, far more precise than your "experiment" has the power to measure.

Quote
I used an iPhone 7 video camera to record myself jumping, then analyzed the video frame by frame to measure my acceleration.

Unless you insert a precisely measured board with evenly spaced lines behind you, there's no way to accurately calculate your acceleration down to the precise measurements you described.

Quote
I also knew how far I was jumping from the camera with great accuracy (to within micrometers).

Do you even know how small a micrometer is? The humidity of the air you're in could change the compression of the fabric in your shoes enough to skew results by micrometers. How straightened your toes are. What kind of measuring device you used. If you don't have the budget to purchase a camera better than an iPhone, then you certainly don't have the budget to purchase a device capable of measuring down to the micrometer.

Quote
I also measured my height to within micrometers.

Same thing... Depending on how you slept last night can affect your bone structure and muscle compression up to a matter of half an inch, let alone micrometers. I just laughed out loud at this point. Because you Mose surely are bull shitting us.

Please let me know if you disagree with any of my points.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Edge_Loop on July 23, 2017, 11:11:06 PM
Erm, am I imagining it or has OP admitted this was a prank?

And you guys are still arguing?

This is insane... Inflatearth give it up man, you're making all these ridiculous posts and threads and just clogging up the genuinely interesting debate going on between other members.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Badxtoss on July 24, 2017, 07:04:38 PM
Erm, am I imagining it or has OP admitted this was a prank?

And you guys are still arguing?

This is insane... Inflatearth give it up man, you're making all these ridiculous posts and threads and just clogging up the genuinely interesting debate going on between other members.
Yeah, it's a prank
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Kami on July 24, 2017, 10:59:36 PM
(http://rahipatel.com/Flat_Earth.fld/image008.png)
(http://rahipatel.com/Flat_Earth.fld/image010.png)

Just because InFlatEarth keeps arguing that he wanted to see the data: It was presented exactly there. The 200 data points he was looking for. In the OP. As this arguments spans several threads I will just post it here, please cite it whenever he starts spouting BS again.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Pezevenk on July 24, 2017, 11:08:24 PM
Nice work, but the wolf pack will find some little thing to discredit you. They will throw everything at you, even the kitchen sink, but my advice, is to put them down with facts and science.

When you use science, they will start pulling rabbits out of the hat.

I too am an ME and believe in the Flat Earth, since it is the only thing that hold up in true science.

I have placed them up against a wall with my last thread,

https://www.theflatearthsociety.org/forum/index.php?topic=71355.0 (https://www.theflatearthsociety.org/forum/index.php?topic=71355.0)

In which I give then two real airports and I ask them to draw me a Free Body Diagram of an airplane landing and to show all the forces, especially the ones that keep the airplane in sync with the ground. So far, I have not had any Free Body Diagrams, because they can’t do the physics.

But I’m curtain that they will pull some Dark Matter energy to try to confuse the subject, because that is what they do. When they are placed on the wall, they will start stating nonsense in order to discourage you.

I suggest, instead of showing the graphs, do some statistical analysis with standard deviations and averages to prove your point with math. It was very smart of you to do 100 jumps. If you need help, send me a message.

Good luck

The guy is obviously a troll and you still think he's serious. Lol.

Actually forget about it. You're probably a troll too.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: InFlatEarth on July 24, 2017, 11:18:33 PM
Explain this

Quote
The time occupied by the moon in returning to the same star is called the time of her sidereal revolution. At the beginning of this century it amounted to 27.32 mean solar days. Its value is not the same in every century. From the time of the most ancient observations until the present day, we find that the sidereal revolution has been gradually becoming shorter and shorter. Will this acceleration always continue? This is a question which observation is incapable of deciding.

Popular Astronomy by Francois Arago 1858 - Page 235

https://books.google.co.uk/books?id=bNAUAQAAMAAJ&pg=PA257&dq=Popular+astronomy+volume+2&hl=en&sa=X&ved=0ahUKEwjUsPij6e7TAhWELcAKHQfdDo4Q6AEIJzAA#v=onepage&q=Popular%20astronomy%20volume%202&f=false
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Mikey T. on July 25, 2017, 04:52:23 AM


I too am an ME and believe in the Flat Earth, since it is the only thing that hold up in true science.



There is zero truth in this statement.  After seeing your blustering about show me the math, but never any correct math from you.  You show a real lack of physics understanding to ever have gotten through the physics classes required for mechanical engineering.  Of course you could have bought yourself an online degree like that Brian Mullins guy from balls out physics.  Some of your arguments remind me of him.
If you did attend a university, please let me know.  I have 4 teenagers, and they must never attend this fake college.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: JackBlack on July 25, 2017, 04:53:26 AM
Explain this

Quote
The time occupied by the moon in returning to the same star is called the time of her sidereal revolution. At the beginning of this century it amounted to 27.32 mean solar days. Its value is not the same in every century. From the time of the most ancient observations until the present day, we find that the sidereal revolution has been gradually becoming shorter and shorter. Will this acceleration always continue? This is a question which observation is incapable of deciding.

Popular Astronomy by Francois Arago 1858 - Page 235

https://books.google.co.uk/books?id=bNAUAQAAMAAJ&pg=PA257&dq=Popular+astronomy+volume+2&hl=en&sa=X&ved=0ahUKEwjUsPij6e7TAhWELcAKHQfdDo4Q6AEIJzAA#v=onepage&q=Popular%20astronomy%20volume%202&f=false

Keep it in a single thread, stop spamming all over the place.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Lonegranger on July 25, 2017, 05:15:58 AM
He presented the numerical data in the plots. I say that the accuracy displayed there can not be achieved with his equipment.

I would expect the precision of the results to be of order 5-10%, but this is just a rough guess and definitely depends on the used method.
As he wants to determine a 0.25% difference (at most), I would want an accuracy at this order of magnitude.

But please be honest with youself: Do you really think the obtained data with only 0.5% deviation can be obtained with an iphone 7 video camera and a person jumping?
I am actually curious in your honest answer InFlatEarth. If you guys want more, here is the matlab code I used to "analyze" the data:

fake = zeros(1,100);
fake(1:100) = 9.807;
fluc =  rand([2 100]);
fluc2 =  (fluc-0.5)./1000;
data = fluc2+9.807
trial = 1:1:100;
figure(1)
plot(trial,data(1,:),'b-o')
title('New York State');
xlabel('Trial Number');
ylabel('Acceleration of Gravity');
hold on
plot(trial,fake,'r');
legend('Measured Values','Average');
figure(2)
plot(trial,data(2,:),'b-o')
title('Indonesia');
xlabel('Trial Number');
ylabel('Acceleration of Gravity');
hold on
plot(trial,fake,'r');
legend('Measured Values','Average');

I apologize to the people who put effort into showing me the flaws in my "methods". I did learn about the existence of a gravimeter from you guys though. InFlatEarth, I appreciate you defending me, but your defenses don't really make any sense. I did graduate from GW but I have not been a PhD student for two years. In truth, I just graduated College and am starting my PhD at CMU this fall. In the words of my favorite cartoon character ever, "I just got bored. Everybody out." ... JimmyTheCrab probably gets that reference ;)


Like I said the guy the guy was a fraud.

The lesson to learn from this is how the flat-tard straw clutchers zoomed in wanting to lap up this fraud crap out of shear desperation. There was no need to crunch numbers to disprove it as his whole claim was so bogus as to be laughable, but the real joke is on the gullible flat-tards who swallowed it hook line and everything.

Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: InFlatEarth on July 25, 2017, 07:00:47 AM
The guy was a fraud, but was he a Flat Earther or a Spherical Earther that posted nonsense to make the Flat Earth look bad.

That is the real question, is it not.

But he did prove a point. You first attack, without even looking at the data!!!
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Badxtoss on July 25, 2017, 09:08:07 AM
The guy was a fraud, but was he a Flat Earther or a Spherical Earther that posted nonsense to make the Flat Earth look bad.

That is the real question, is it not.

But he did prove a point. You first attack, without even looking at the data!!!
How about that map?  Or your calculations on the size of the sun and moon?  Anything?
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: InFlatEarth on July 25, 2017, 09:27:31 AM
The guy was a fraud, but was he a Flat Earther or a Spherical Earther that posted nonsense to make the Flat Earth look bad.

That is the real question, is it not.

But he did prove a point. You first attack, without even looking at the data!!!
How about that map?  Or your calculations on the size of the sun and moon?  Anything?

Rome was not built in a day...

A songs for you, but you are probably too young to remember them when they came out



Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Badxtoss on July 25, 2017, 10:00:11 AM
The guy was a fraud, but was he a Flat Earther or a Spherical Earther that posted nonsense to make the Flat Earth look bad.

That is the real question, is it not.

But he did prove a point. You first attack, without even looking at the data!!!
How about that map?  Or your calculations on the size of the sun and moon?  Anything?

Rome was not built in a day...

A songs for you, but you are probably too young to remember them when they came out


But a map should be easy.  Just make it fit known observations.
And I'm pretty sure I am older than you.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Kami on July 25, 2017, 10:07:04 AM
The guy was a fraud, but was he a Flat Earther or a Spherical Earther that posted nonsense to make the Flat Earth look bad.

That is the real question, is it not.

But he did prove a point. You first attack, without even looking at the data!!!

No. I looked at the data and concluded that given the proposed method his data are not believable. You, on the other hand, blindly defended him. So I agree, he did prove a point. That you blindly and stupidly defend every argument in favor of a flat earth, no matter how fake or desperate it is.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: InFlatEarth on July 25, 2017, 10:10:11 AM
What data, and he did prove a point, you first attack and then ask questions!!!!

Who asked to see the data first?

Must I remind you that I asked him to post it on the Thread...
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: simba on July 25, 2017, 11:22:27 AM
What data, and he did prove a point, you first attack and then ask questions!!!!

Who asked to see the data first?

Must I remind you that I asked him to post it on the Thread...

He also proved another point, that you hang onto anything that supports your claims, even if it's fake and you don't have the knowledge to notice it. What else have you hung unto that is/was fake?

Let that be a lesson for the future.

Nice work, but the wolf pack will find some little thing to discredit you. They will throw everything at you, even the kitchen sink, but my advice, is to put them down with facts and science.

When you use science, they will start pulling rabbits out of the hat.

I too am an ME and believe in the Flat Earth, since it is the only thing that hold up in true science.

I have placed them up against a wall with my last thread,

https://www.theflatearthsociety.org/forum/index.php?topic=71355.0 (https://www.theflatearthsociety.org/forum/index.php?topic=71355.0)

In which I give then two real airports and I ask them to draw me a Free Body Diagram of an airplane landing and to show all the forces, especially the ones that keep the airplane in sync with the ground. So far, I have not had any Free Body Diagrams, because they can’t do the physics.

But I’m curtain that they will pull some Dark Matter energy to try to confuse the subject, because that is what they do. When they are placed on the wall, they will start stating nonsense in order to discourage you.

I suggest, instead of showing the graphs, do some statistical analysis with standard deviations and averages to prove your point with math. It was very smart of you to do 100 jumps. If you need help, send me a message.

Good luck

This is you brown nosing all over the place.

Have some self respect, you got rekt here, accept it and move on, doing that doesn't diminish the idea of a flat earth (although the idea itself has a lot of evidence contradicting it) but is hilarious at best seeing you being fooled by not being critical as much as you state to be.

Also, using a quote from Werner Von Braun as signature? Woah man...
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: InFlatEarth on July 25, 2017, 11:33:05 AM
The wolf pack has moved on the next stage of making fun of you and calling you names.

If they would truly interested in your work, they would ask for the data readings themselves. It is funny how they can prove you wrong, without ever looking at the actual numbers of your experiment.
[/size]

Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: JackBlack on July 25, 2017, 03:02:51 PM
The guy was a fraud, but was he a Flat Earther or a Spherical Earther that posted nonsense to make the Flat Earth look bad.
That is the real question, is it not.
But he did prove a point. You first attack, without even looking at the data!!!
No, he did prove a point.
The FEers came here congratulating him on his nonsense and attacking those that were refuting him.
Meanwhile the REers went to showing problems in his methodology and provide directly contradicting results, and even asked to see his data and exact methodology.

So no, it shows the FEers will happily accept evidence which supports their beliefs, regardless of how insane or impossible it is, while the REers "attack" FE claims by pointing out contradictory evidence or the impossibility of their claims.

So thanks for helping show the REers are the rational, scientific ones.

Although I suppose that does just raise another question.
You have been here spouting loads of shit.
Are you a FEer just being a typical FEer, or are you a REer trying to make FEers look bad?

The issue is it is impossible to tell. All FEers have are bullshit claims based upon lies or ignorance. The trolls or fakes act just like the real ones.

What data, and he did prove a point, you first attack and then ask questions!!!!
Who asked to see the data first?
Must I remind you that I asked him to post it on the Thread...
Must I remind you that I asked before you, in my very first reply, while you were bitching about how "mean" the REers are coming on in groups and pointing out bullshit?
I would say you only asked to see it after several people explained how it was impossible, but even then, that isn't actually asking to see the data.



Your messages (Note: the one you asked for isn't actually asking for data. It was saying if we were truly interested we would ask, so I have provided both were you came close to asking):
If they would truly interested in your work, they would ask for the data readings themselves. It is funny how they can prove you wrong, without ever looking at the actual numbers of your experiment.

So you accept that this experiment is utter bullshit and it is impossible with the given equipment to make such precise calculations? Good.
I have to see the numerical data first, but I'm not interested if the data is precise, but it is accurate and if you had an engineering degree you would know the difference!

Note the first one, you didn't ask for the data, you said if we were interested in his work we would ask for the data, and again bitched that we were proving him wrong without even needing to see his data.

Note the second one, still not asking to see his data. Instead you were saying you would have to see the data before you determined if the experiment was bullshit.

Now look at mine:
Tell us your exact methodology.
Tell us exactly what you measured and how.
Tell us what calculations you then did.
Tell us how you determined your camera's frame rate, including what it actually uses and what effects things like temperature might have on that.

Note: Explicating wanting him to provide the data, not just making a vague reference to needing the data for something.

Also note the times.
Your first post coming close to asking about the data in general was almost a day after your first post in this thread (21 hours 30 minutes).
My first post in this thread was 11 hours 5 minutes after your first post, but already asked for the data (I suppose you could say I didn't ask, I demanded). This was 10 hours and 25 minutes before you came close to asking, which was 2 hours and 10 minutes after your first post after mine.

So who actually showed interest in the data?
Me.
Who only brought up vague references to needing or wanting the data for various purposes, and only did so long after it was already refuted? YOU!
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Kami on July 25, 2017, 03:42:32 PM
(http://rahipatel.com/Flat_Earth.fld/image008.png)
(http://rahipatel.com/Flat_Earth.fld/image010.png)

Just because InFlatEarth keeps arguing that he wanted to see the data: It was presented exactly there. The 200 data points he was looking for. In the OP. As this arguments spans several threads I will just post it here, please cite it whenever he starts spouting BS again.

Looks like data to me. In the first post.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: MicroBeta on July 26, 2017, 07:14:40 PM
Fellow Flat Earthers and respected Globers. I have been working on this experiment for a few months now and believe I have disproved the spinning globe model of our planet, while simultaneously proving the Flat Earth model!

I graduated from the school of engineering and applied sciences at the George Washington University with a degree in Mechanical Engineering and am two years into a PhD at Carnegie Mellon University. I was introduced to the idea of FE by one of my classmates midway through last school year. I’ll admit at first, I was dubious about what she was telling me. After a couple of days of research, however, it all started to make sense. With a few sentences, she had opened up my mind to a level I thought was never possible. How could I have been brainwashed for all these years?

(http://rahipatel.com/Flat_Earth.fld/image002.png)

As time went on, I started realizing that there was a slight disconnect with the FE theories and the scientific methods I was learning in school. A lot of Globers were telling me that if I put these ideas to the “test”, the FE model would not hold up. In my heart though, I knew these ideas were right, and using the scientific methods and theories I have learned over the course of my education, I believe I have proved it! Below, I will describe to you how I did it.
 
*Disclaimer: I apologize to any other Flat Earthers who may have run similar tests. I have done a lot of research on this topic and have not seen anything like it on the web, but I am only human, so I may have missed the articles or blog posts.
 
To understand my method and logic, I must first explain a phenomenon that occurs from the spinning globe model that Globers believe in. If the earth were a spinning ball, centrifugal force would cause the equator to bulge out a little causing cities near the equator to be farther from the center of the earth than cities farther away from the equator. Below is an image to show this:

(http://rahipatel.com/Flat_Earth.fld/image004.png)

The globe on the left is what most Globers imagine the earth to look like. The “scientifically accurate” version of this model looks like the image on the right.
            Now, based on scientists’ theories of gravity, the farther you are from the center of the earth, the lower the acceleration of gravity. Therefore, if I measured the acceleration of gravity at two different locations on the planet, they should be different. BUT WE FLAT EARTHERS KNOW THAT THIS IS PREPOSTEROUS.
Since the earth is flat, it is just accelerating at 9.807 m/s^2 in space creating a uniform gravitational field. This means that if Flat Earth is correct, no matter where I measure the acceleration of gravity, I should get the same value… and that’s exactly what happened. Here is how I went about doing the experiment.

(http://rahipatel.com/Flat_Earth.fld/image006.png)

 I am originally from NY state and that’s where I took my first measurements. I used a condo that my uncle owns in up state New York to run my tests. I used an iPhone 7 video camera to record myself jumping, then analyzed the video frame by frame to measure my acceleration. Below is one of the frames from one of the trials.
 
I propped the phone using a vice and did not move it during all trials for the day. I was sure to mark exactly where everything was relative to everything else before taking my phone for the night. I also knew how far I was jumping from the camera with great accuracy (to within micrometers). I also measured my height to within micrometers. Using these two values, I was able get an extremely accurate value for my height off the ground for each frame. Since I knew the frame rate of the camera, I had a plot of my distance from the ground as a function of time. Using a simple formula, I was able to calculate the acceleration.

 I did this with 100 different jumps to account for random error. I then took a trip out to Indonesia and stayed with some relatives who live very close to the equator to run another 100 jumps. Here are plots of the results:

(http://rahipatel.com/Flat_Earth.fld/image008.png)
(http://rahipatel.com/Flat_Earth.fld/image010.png)

As you can see, the average is 9.807 m/s^2 in both places! I crunched the numbers and if the earth was actually a spinning globe, in the New York state location, I would be 19 km closer to the center of the earth so I should have measured 9.809 m/s^2. While in Indonesia, I should have measured 9.805. As you can see in the zoomed in plots, my data does not hit these values even with random error.
 
I have peer reviewed that data my self and even showed some of my colleagues who agree with me. I urge other Flat Earthers and Globers alike to run similar experiments so we can finally end this nonsensical argument once and for all!
You could rent a high speed camera and try the experiment again.  The fps on a cell phone camera is not nearly high enough resolve any differences in acceleration.  But, a high speed camera will give you the resolution and a definitive answer.  There would be no doubts and nobody could dispute your findings.

Mike
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: petej0 on July 26, 2017, 07:31:35 PM
Fellow Flat Earthers and respected Globers. I have been working on this experiment for a few months now and believe I have disproved the spinning globe model of our planet, while simultaneously proving the Flat Earth model!

I graduated from the school of engineering and applied sciences at the George Washington University with a degree in Mechanical Engineering and am two years into a PhD at Carnegie Mellon University. I was introduced to the idea of FE by one of my classmates midway through last school year. I’ll admit at first, I was dubious about what she was telling me. After a couple of days of research, however, it all started to make sense. With a few sentences, she had opened up my mind to a level I thought was never possible. How could I have been brainwashed for all these years?

(http://rahipatel.com/Flat_Earth.fld/image002.png)

As time went on, I started realizing that there was a slight disconnect with the FE theories and the scientific methods I was learning in school. A lot of Globers were telling me that if I put these ideas to the “test”, the FE model would not hold up. In my heart though, I knew these ideas were right, and using the scientific methods and theories I have learned over the course of my education, I believe I have proved it! Below, I will describe to you how I did it.
 
*Disclaimer: I apologize to any other Flat Earthers who may have run similar tests. I have done a lot of research on this topic and have not seen anything like it on the web, but I am only human, so I may have missed the articles or blog posts.
 
To understand my method and logic, I must first explain a phenomenon that occurs from the spinning globe model that Globers believe in. If the earth were a spinning ball, centrifugal force would cause the equator to bulge out a little causing cities near the equator to be farther from the center of the earth than cities farther away from the equator. Below is an image to show this:

(http://rahipatel.com/Flat_Earth.fld/image004.png)

The globe on the left is what most Globers imagine the earth to look like. The “scientifically accurate” version of this model looks like the image on the right.
            Now, based on scientists’ theories of gravity, the farther you are from the center of the earth, the lower the acceleration of gravity. Therefore, if I measured the acceleration of gravity at two different locations on the planet, they should be different. BUT WE FLAT EARTHERS KNOW THAT THIS IS PREPOSTEROUS.
Since the earth is flat, it is just accelerating at 9.807 m/s^2 in space creating a uniform gravitational field. This means that if Flat Earth is correct, no matter where I measure the acceleration of gravity, I should get the same value… and that’s exactly what happened. Here is how I went about doing the experiment.

(http://rahipatel.com/Flat_Earth.fld/image006.png)

 I am originally from NY state and that’s where I took my first measurements. I used a condo that my uncle owns in up state New York to run my tests. I used an iPhone 7 video camera to record myself jumping, then analyzed the video frame by frame to measure my acceleration. Below is one of the frames from one of the trials.
 
I propped the phone using a vice and did not move it during all trials for the day. I was sure to mark exactly where everything was relative to everything else before taking my phone for the night. I also knew how far I was jumping from the camera with great accuracy (to within micrometers). I also measured my height to within micrometers. Using these two values, I was able get an extremely accurate value for my height off the ground for each frame. Since I knew the frame rate of the camera, I had a plot of my distance from the ground as a function of time. Using a simple formula, I was able to calculate the acceleration.

 I did this with 100 different jumps to account for random error. I then took a trip out to Indonesia and stayed with some relatives who live very close to the equator to run another 100 jumps. Here are plots of the results:

(http://rahipatel.com/Flat_Earth.fld/image008.png)
(http://rahipatel.com/Flat_Earth.fld/image010.png)

As you can see, the average is 9.807 m/s^2 in both places! I crunched the numbers and if the earth was actually a spinning globe, in the New York state location, I would be 19 km closer to the center of the earth so I should have measured 9.809 m/s^2. While in Indonesia, I should have measured 9.805. As you can see in the zoomed in plots, my data does not hit these values even with random error.
 
I have peer reviewed that data my self and even showed some of my colleagues who agree with me. I urge other Flat Earthers and Globers alike to run similar experiments so we can finally end this nonsensical argument once and for all!

So you did an unscientific experiment jumping that has a variable that you cant account for.  Your ability to jump exactly the same 100 times.  SIGH....

Why dont you do this. 

Buy this scale:
https://www.amazon.com/dp/B06WD3C2KV?psc=1

Buy this calibration weight:
https://www.amazon.com/Calibration-Weight-Digital-Pocket-Scales/dp/B003EH4SPE/ref=pd_sim_328_5?_encoding=UTF8&pd_rd_i=B003EH4SPE&pd_rd_r=QB6EFA639PRNY60GAVWJ&pd_rd_w=Gv8TP&pd_rd_wg=2Wra8&psc=1&refRID=QB6EFA639PRNY60GAVWJ

Calibrate your scale and meassure in one location, then travel north or south a few hundred miles and take a second measurement and you will see that the scale will be slightly off.  which proves the weight being slightly different at different locations.
Title: Re: More Utterly Undeniable Proof of Flat Earth!
Post by: Kami on July 26, 2017, 11:11:05 PM
Guys, the OP already admitted that this was just a joke and that he faked the entire data. :)