What experiments can I do to prove that the Earth is flat?

Hello! I am doing a project where I test whether the globe or flat earth model corresponds with reality. I have found a few experiments that can be used to prove the shape of the earth, but to avoid bias I want to ask the people here for some experiments/tests I can do to prove that the earth is flat.

What experiments do you have in mind already? Since this sounds like a school project, it would probably be best to look into your own ideas and ask for feedback about whether there is any inherent bias in your proposed experiment.

'To avoid bias'..... Yet your username is 'flat earth scam'....


I think you're biased

im not designing my own experiment, and this isn't a school project. i just want to try out experiments from flat earthers and see if they actually corroborate the flat earth model.

im not designing my own experiment, and this isn't a school project. i just want to try out experiments from flat earthers and see if they actually corroborate the flat earth model.

You wrote, "I have found a few experiments that can be used to prove the shape of the earth."

What are those experiments you speak of?

im not designing my own experiment, and this isn't a school project. i just want to try out experiments from flat earthers and see if they actually corroborate the flat earth model.

One experiment I saw flat earthers perform was to use a ring laser gyroscope which on a flat earth would show no rotation.

The other they tried is using some lasers and cardboard with holes in it, which on a flat earth would show the laser at all heights but on a round earth would only show lights at the top.

One experiment proposed by a flat earther on this site is to look through a level tube which will not show the ground if the earth is flat.

You can also perform experiments to calculate the Bishop constant which according to experts in that field, should be "a number".

A flat earther here proposes that PI is wrong and the volume of a sphere is not correct, although I'm unsure how that proves a flat earth.

There are numerous flat earth maps which you can use to perform experiments based on plane travel times. Nobody knows which map is correct.

John Davis has this super cool string experiment, where the string is pulled taunt and the distance the string is from the ground at the ends compared to the middle will show if the earth is round or flat.  Or something like that.  There's an entire topic on it.

If I remember, it was determined that the string had to be made out of Vibranium in order to get the experiment right.

Simply use your FM radio and drive until you are out of sight from the tower. I have picked up an FM station ~100km away from the tower. On a spherical earth with a horizon of ~5km, this is impossible

Therefore globe model is debunked

Simply use your FM radio and drive until you are out of sight from the tower. I have picked up an FM station ~100km away from the tower. On a spherical earth with a horizon of ~5km, this is impossible

Therefore globe model is debunked

And bam! Job done. Flat Earth forever!

If I remember, it was determined that the string had to be made out of Vibranium in order to get the experiment right.

Are there any cannon references to Vibraniums inelasticity?  I mean they weave into suits, so it has to be flexible and if it's flexible it can stretch and if it can stretch it can sag.

I'm not sure any material, real or imagined can not sag over miles. Even solid netronium, assuming you could keep it from exploding.

Quote from: Stash on June 02, 2022, 07:07:52 PM

If I remember, it was determined that the string had to be made out of Vibranium in order to get the experiment right.

Are there any cannon references to Vibraniums inelasticity?  I mean they weave into suits, so it has to be flexible and if it's flexible it can stretch and if it can stretch it can sag.

I'm not sure any material, real or imagined can not sag over miles. Even solid netronium, assuming you could keep it from exploding.

A powerful enough laser should do it right?

You have one muppet standing at a beach in the U.K and another muppet standing at a beach in The Netherlands. Both facing each other. Set up a powerful enough laser pointer 6ft off the ground at one end and a target, 6ft off the ground at the other.

Guaranteed the laser pointer will hit the target

Quote from: JJA on June 03, 2022, 03:10:01 AM

Quote from: Stash on June 02, 2022, 07:07:52 PM

If I remember, it was determined that the string had to be made out of Vibranium in order to get the experiment right.

Are there any cannon references to Vibraniums inelasticity?  I mean they weave into suits, so it has to be flexible and if it's flexible it can stretch and if it can stretch it can sag.

I'm not sure any material, real or imagined can not sag over miles. Even solid netronium, assuming you could keep it from exploding.

A powerful enough laser should do it right?

You have one muppet standing at a beach in the U.K and another muppet standing at a beach in The Netherlands. Both facing each other. Set up a powerful enough laser pointer 6ft off the ground at one end and a target, 6ft off the ground at the other.

Guaranteed the laser pointer will hit the target

I mentioned doing exactly that with lasers a few posts ago, flat earthers tried it and showed the earth was round.

String has been suggested, but nobody seems to know how to make it strong enough in this universe.  Scale continues to be something flat earthers fail to grasp, as almost all these issues comes down to not understanding it.

Everything will sag. The question is if it will sag more than the Earth will curve.

Assuming the linear density is constant, it will follow an equation of the form y=a*cosh(x/a), or if shifted to have the centre at (0,0), will be y=a*cosh(x/a) - a.
This means the end will be at a height of a*cosh(l/a) - a above the centre (where l is the distance from the edge to the centre).

In this equation, a is equal to T/(lambda*g), i.e. the tension divided by the linear density and gravitational acceleration.
And if we divide the top and bottom by the area, this gives us the stress and density instead of tension and linear density.
And if we multiple a by g, we end up with stress on density, which is the specific strength.

If you take a string 2 km long, the distance from the edge to the centre will be 1 km.
The drop over this distance (equal to the bulge at the centre of 2 km) will be ~78.5 mm.
To have the string only sag to the 78.5 mm, you need a to be equal to ~6371000. This corresponds to 62.4 MPa m^3/kg or 62.4 GPa cm^3/g or 62400 kN m/kg.

This site has some nice lists of specific strengths:
https://www.engineeringtoolbox.com/engineering-materials-properties-d_1225.html
Convienently, the units they have for Specific strength are the same as above.
But the highest value they have is 1.08, just roughly 1.7% of what is needed.

Wikipedia has a bigger list:
https://en.wikipedia.org/wiki/Specific_strength
But it uses different units. In the units they use we need ~62400. That is only met by graphene, at which point you need to consider g. With g=9.8, graphene just beats the requirement and we get the sag 0.02 mm less than the bulge. With g=9.81, we instead get 0.06 mm more sag than the bulge.

And that is with the graphene at its limits. So if you go slightly tighter, you snap it.

Now, vibranium allegedly has a specific strength of 5835 kN m/kg, making it better than carbon fibre, but worse than graphene.

Model the two models in a 3D software and compare to real photos.

Simply use your FM radio and drive until you are out of sight from the tower. I have picked up an FM station ~100km away from the tower. On a spherical earth with a horizon of ~5km, this is impossible

Therefore globe model is debunked

You only think your ~100km away, but everyone knows that Australia doesn't exist and that you are really just sitting in a desert inside the USA.

Quote from: Masalang the Torpedo on June 02, 2022, 10:49:59 PM

Simply use your FM radio and drive until you are out of sight from the tower. I have picked up an FM station ~100km away from the tower. On a spherical earth with a horizon of ~5km, this is impossible

Therefore globe model is debunked

You only think your ~100km away, but everyone knows that Australia doesn't exist and that you are really just sitting in a desert inside the USA.

I have not discounted this possibility myself

I'm thinking of experiments similar to the bedford level experiment. I'm not going to buy a "ring laser gyroscope" for something like this. I will try the FM radio experiment and the bedford level one, as well as some of the other simple ones in this thread.

@NotSoSkeptical can you link me to that topic?
@Stash Vibranium is a fictional metal from the movie "black panther"
@Themightykabool I thought that you guys believed that photos of the earth are doctored/faked? What photos should I compare to?

Thank you to everyone who replied.

Not the exact topic, but here is a topic that discusses several experiments.   https://www.theflatearthsociety.org/forum/index.php?topic=88689.0

ANd here is the string experiment.  I was slightly off with some of the details but it's essentially the same premise except a candle in the center.  https://www.theflatearthsociety.org/forum/index.php?topic=82883.0

I'm thinking of experiments similar to the bedford level experiment. I'm not going to buy a "ring laser gyroscope" for something like this. I will try the FM radio experiment and the bedford level one, as well as some of the other simple ones in this thread.

@NotSoSkeptical can you link me to that topic?
@Stash Vibranium is a fictional metal from the movie "black panther"
@Themightykabool I thought that you guys believed that photos of the earth are doctored/faked? What photos should I compare to?

Thank you to everyone who replied.

take your own photos then.

oh nm
i'm not talking about photos from space.
to clarify
take photos from ground level on the earth of the supposed "missing curvature" using very tall objects very far away.

@Stash Vibranium is a fictional metal from the movie "black panther"

Says who? Prove it!

Quote from: flat earth scam on June 03, 2022, 06:35:47 AM

@Stash Vibranium is a fictional metal from the movie "black panther"

Says who? Prove it!

Flat earthers claim it's impossible to tell the difference between movies and real footage so who knows!

I want to ask the people here for some experiments/tests I can do to prove that the earth is flat.

Well in spite of all the above discussion about what others have tried or claimed, the short answer to your question is: There is no experiment you can do to prove the earth is flat.

Quote from: flat earth scam on June 02, 2022, 09:35:21 AM

I want to ask the people here for some experiments/tests I can do to prove that the earth is flat.

Well in spite of all the above discussion about what others have tried or claimed, the short answer to your question is: There is no experiment you can do to prove the earth is flat.

Do you often conduct experiments where you have already drawn a conclusion? Seems like a pretty unscientific and biased way to look for answers

Hello! I am doing a project where I test whether the globe or flat earth model corresponds with reality. I have found a few experiments that can be used to prove the shape of the earth, but to avoid bias I want to ask the people here for some experiments/tests I can do to prove that the earth is flat.

There is of course no experiment that could ever be done that would prove the earth is flat. It’s just not possible. The earth is not flat it’s a sphere. Regardless of how you want to play this or regardless of what others say there is no getting away from the facts of the matter.

Do you often conduct experiments where you have already drawn a conclusion? Seems like a pretty unscientific and biased way to look for answers

I agree, it does seem biased to ask for experiments to prove Earth is flat; rather than experiments to determine the shape of Earth.

Quote from: Masalang the Torpedo on June 04, 2022, 12:48:27 PM

Do you often conduct experiments where you have already drawn a conclusion? Seems like a pretty unscientific and biased way to look for answers

I agree, it does seem biased to ask for experiments to prove Earth is flat; rather than experiments to determine the shape of Earth.

Not at all.
If someone has a proposition or dare I say it a hypothesis it’s expected that the individual puts forward sone experimental method or evidence that proves said proposition. The flat earth ploy of shying away with offering any ‘experimental procedure’ that could be carried out in favour of picking non existent holes in proven science bolstered by any number of conspiracies is just about all they can offer. They don’t have experiments because, I as said, none exist that would yield a positive result. How could they?
What is biased about asking for evidence. You do it all the time! Talk about consistency!

Quote from: JackBlack on June 04, 2022, 03:28:12 PM

Quote from: Masalang the Torpedo on June 04, 2022, 12:48:27 PM

Do you often conduct experiments where you have already drawn a conclusion? Seems like a pretty unscientific and biased way to look for answers

I agree, it does seem biased to ask for experiments to prove Earth is flat; rather than experiments to determine the shape of Earth.

Not at all.
If someone has a proposition or dare I say it a hypothesis it’s expected that the individual puts forward sone experimental method or evidence that proves said proposition. The flat earth ploy of shying away with offering any ‘experimental procedure’ that could be carried out in favour of picking non existent holes in proven science bolstered by any number of conspiracies is just about all they can offer. They don’t have experiments because, I as said, none exist that would yield a positive result. How could they?

Any question is going to be biased.  Even "what is the shape of the earth" is biased in that it presupposes the earth exists and has a defined shape. Maybe it changes. Maybe it's only created under each person as they move around and recycled when we leave. No way to have an unbiased opinion for an experiment, you have to assume SOMETHING.

The OPs question certainly can be answered.  Here is another flat earth experiment.

Fly a rocket into space and take pictures of the Earth, if it's flat you will see a flat disk.  Or you will hit the dome.  Seems pretty easy.

Quote from: Timeisup on June 05, 2022, 12:43:08 AM

Quote from: JackBlack on June 04, 2022, 03:28:12 PM

Quote from: Masalang the Torpedo on June 04, 2022, 12:48:27 PM

Do you often conduct experiments where you have already drawn a conclusion? Seems like a pretty unscientific and biased way to look for answers

I agree, it does seem biased to ask for experiments to prove Earth is flat; rather than experiments to determine the shape of Earth.

Not at all.
If someone has a proposition or dare I say it a hypothesis it’s expected that the individual puts forward sone experimental method or evidence that proves said proposition. The flat earth ploy of shying away with offering any ‘experimental procedure’ that could be carried out in favour of picking non existent holes in proven science bolstered by any number of conspiracies is just about all they can offer. They don’t have experiments because, I as said, none exist that would yield a positive result. How could they?

Any question is going to be biased.  Even "what is the shape of the earth" is biased in that it presupposes the earth exists and has a defined shape. Maybe it changes. Maybe it's only created under each person as they move around and recycled when we leave. No way to have an unbiased opinion for an experiment, you have to assume SOMETHING.

The OPs question certainly can be answered.  Here is another flat earth experiment.

Fly a rocket into space and take pictures of the Earth, if it's flat you will see a flat disk.  Or you will hit the dome.  Seems pretty easy.

The earth does exist and has a shape or form that has nothing to do with what you or anyone else happens to believe in. There is no bias when it comes to the way things are in nature. They are what they are despite your belief. The only reason that such a question exists has nothing to do with the reality of the situation but more about the troubled and complex minds of some Homo sapiens.

The problem some people have is they wish to reshape reality to fit with their own distorted view of the world driven either by religious dogma or some other fringe belief. Regardless of what anyone thinks belief one way or another changes the nature of reality.

The planet we live on exists and is clearly spherical, there is no argument just as there can never be an experiment to prove its flat. The real question that should be asked is why do some  people feel compelled into believing the world is flat?

https://www.rferl.org/a/earth_photograph_russia_satellite_/24580021.html

NASA free image courtesy Russian Federal Space Agency’s Elektro-L weather satellite.

Jacks right

An experiment asks a question.
The hypohesis answers the question within the question, based on the experiemnt.


hy·poth·e·sis
/hīˈpäTHəsəs/
Learn to pronounce
noun
a supposition or proposed explanation made on the basis of limited evidence as a starting point for further investigation.



So if "how to prove the earth flat is the question"
The subject is not the earth-flat but that you proved it.
The question is given as the earth-flat.



Questions and Emphatic Statements
Sometimes the subject of a sentence can be hard to find. In a question, the subject usually comes between the helping verb and the main verb. To find the subject, keep all the words from the question and turn it into a declarative sentence.

Did you decide to keep that puppy?
You did decide to keep that puppy.


How did you prove the earth is flat?
You did prove the earth is flat.



The unbiased wuestion woild be

Experiment
How to i determine the shape of the earth?

Hypothesis
I beleive since tall boats and mountains disappear bottom-up, the earth curves down and away based on how circles and triangles work.