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Messages - Zaphod

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1
I think people are getting a bit bogged down here.....

Forces are vector quantities, they have magnitudes and (importantly) directions. "Push" and "Pull" are surely just defining the direction of an applied force from the perspective of the person applying said force.

Take 2 people either side of a "regular" door.  One person will have to "push" to open it, the other will have to "pull". It's just grammatical convention. The door doesn't care what word you use, it just "feels" a force acting in one direction.

Take 2 people facing each other in a tug-of-war with a rope. They would both say they are "pulling" on the rope. If they both turned around (backs to each other) they might say they are both "pushing" the rope away. Either the way the rope experiences a stretching force and is placed under tension. As an aside, if they both  "pulled" a 100N force onto the rope, they would both have to "push" 100N of force into the ground to stay still, and a spring balance placed into the middle of the rope would read........100N! (not 200N as sandokhan thinks - something he could easily prove to himself by experiment, yet chooses not to!).


2

Well...to be pedantic, what I was taught, and I think it still holds good is that surface tension arises from the fact that water molecules have covalent bonds where they do that groovy electron sharing thing, which gives rise to the H end of the molecule being slightly +ve and the O end being ever so slightly -ve, resulting in the hydrogen bonding you mentioned .The molecules naturally joint together like tiny magnets......bingo surface tension. And you are most correct about the amazing properties water has as a result, making it quite unique. By rights it should actually be a gas at room temperature, but luckily for us it ainít!.

Ah yes, that sounds familiar. I had to answer a short essay question in my "O" Level chemistry exam on hydrogen bonding and now, nearly 40 years later, terms like "polar covalent bond" and "electronegativity" are surfacing in my head again! From what I remember not all covalent bonds will produce strong polarity, but in the case of water it does due to the relative sizes of the hydrogen and oxygen atoms. Might go and re-visit some of this with a beer later.

Cheers

Z

3
Try basic science and find out what a covalent bond actually is. That should sort you out.

Covalent bonds are responsible for the formation of the water molecule itself, not for the inter-molecular attraction that causes the surface tension of liquid water, which is hydrogen bonding in this case. A hydrogen bond is the attraction between the negatively charged oxygen atom of one molecule with the positively charged hydrogen atom of another.

Hydrogen bonds are really cool and are the reason why water is one of the very few substances that is less dense in solid form that its liquid state. That's the reason water ice floats, why oceans freeze from the top rather than the bottom.

Good vid on surface tension here....


4
Technology, Science & Alt Science / Re: GOD-TIER CAMERA LIST
« on: December 06, 2019, 09:07:35 AM »
You can't just talk about awesome old cameras?
Always has to be some dig at FE?

Actually, good point. Sorry.

My other "go to" camera is an old Panasonic TZ60 which I pretty much use in auto mode. Takes amazing pics and generally gets the right modes.

The 7D is lovely though. Feels really substantial. I treated myself to a 70-200 F2.8L many years ago and that's a joy to use. Fantastic colours.

5
Technology, Science & Alt Science / Re: GOD-TIER CAMERA LIST
« on: December 04, 2019, 09:48:06 AM »
My Canon 7d Mk1 is fab. 7FPS is brilliant for ski photos.

But, surely the Nikon P900 is the only camera that can show the earth is flat?

6
Flat Earth General / Re: Strongest FE Evidence
« on: December 04, 2019, 08:37:26 AM »

Boeing and Airbus and Rolls-Royce and everyone else BUILD THEIR ENGINES using the SCHAUBERGER MODEL/TEMPLATE.

No one else could make it work.

But he could, for the first time, using DOUBLE TORSION ETHER WAVES. That is why jet airplanes use much less fuel than we are told.



That's pure comedy gold Sandy.

I know I've only been flying large commercial jets for 30 years now, but you'd think I'd have heard of that. I mean, when I order the fuel to go to say, off the top of my head , Toronto, then sign for it so the fuelling company get paid, then do the calculations to ensure that we've got enough and there hasn't been an embarrasing pounds/kilos mix up etc and that we've got the correct total aircraft weight so we can work out the take-off performance and calculate the correct engine thrust...you'd think somewhere along the line the whole "weights and measures" system would pick up on the fact that airliners burn less fuel than advertised.

And FFS jet engines simply use the same "suck-squeeze-bang-blow" as internal combustion engines, not di-lithium crystal fucking flux capacitors.

You really need to get out more. Maybe actually like go to Niagara-on-the-Lake and look at the top half of the Toronto skyline across the water. Or go to a beach where there are cliffs behind and and see how much farther you can see as you climb.

7
Flat Earth General / Re: Strongest FE Evidence
« on: December 02, 2019, 12:07:29 PM »
Sandy

From an elevation of 170m, what do you think the distance to the horizon should be on a round Earth?

What do you think the distance from Grimsby ON to the base of the CN Tower is?

8
Flat Earth Debate / Re: Proof the Earth is round
« on: May 23, 2019, 12:23:07 AM »
You clearly didn't read what i put.

I bloody well did because you said..

Quote
i would even accept a sun over London

You're really going to have to be more thorough with your arguments if you want FEs to respond to you here.

For the avoidance of doubt, I don't believe the earth to be flat anymore than I believe that you have more than half a brain.

9
Flat Earth Debate / Re: Proof the Earth is round
« on: May 22, 2019, 10:48:20 PM »


I will say this again: Prove the Earth is flat, by taking a picture of the sun from NY, while it is over London. So far, I'm getting alot of "Well your arguments weak.


So if the sun is "over London" it must be 12 noon, which would make it 7am in New York, which is well past sunrise in the summer.

Your argument is definitely weak!

You haven't really thought this through have you?

10
Philosophy, Religion & Society / Re: Brexit
« on: May 16, 2019, 03:16:25 AM »
The quite brilliant Stewart Lee on Brexit....




11
Feynman Lost Lecture

This is a really good short video on elliptical orbits based on a lecture by the great Richard Feynman, who was teaching Newtonian mechanics.




12
Flat Earth General / Re: McCarthyism vs Global Earth Denialism
« on: March 18, 2019, 12:00:58 AM »
Michael Shermer's "Baloney Detection Kit". Should be required reading for ALL.




1. How reliable is the source of the claim?
2. Does the source make similar claims?
3. Have the claims been verified by somebody else?
4. Does this fit with the way the world works?
5. Has anyone tried to disprove the claim?
6. Where does the preponderance of evidence point?
7. Is the claimant playing by the rules of science?
8. Is the claimant providing positive evidence?
9. Does the new theory account for as many phenomena as the old theory?
10. Are personal beliefs driving the claim?

13
Stumbled across this earlier whilst putting off cleaning the chickens out!

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14
Flat Earth General / Re: Bob Knodel and the laser ring gyroscope
« on: March 14, 2019, 01:24:42 AM »
I have one in the "planning stage" entitled "On the Coriolis Acceleration and the Sagnac Delay".
The first post is intended to be just the definitions and simple derivations, then wait and see.

Good man, I'll leave it to you then. Maybe 2 seperate threads for the coriolis and sagnac effects?

15
Flat Earth General / Re: Bob Knodel and the laser ring gyroscope
« on: March 13, 2019, 10:25:28 AM »
It was going so well up until the last post Sandy.

No formulas here please! Start a new thread for that.

What I will say though is this. You appear to have it all arse-about-face...

The coriolis effect is what we see in the real world - objects moving in curved paths, different directions in different hemispheres. This is all explained nicely using a rotating globe. Moreover the formula for the coriolis effect (by which I mean a predicting tool for the paths of moving objects) is derived using relatively trivial geometry. We start with a model, derive a formula, test it against reality. The coriolis effect has absolutely nothing to do with laser gyros or the sagnac effect.

You're fond of quoting Feynman here - if the experiments don't match the hypothesis then the hypothesis is wrong.

Now, you say the observed coriolis effect has an all-together different cause. Your hypothesis has to explain all the observed effects. Your hypothesis should have a mechanism from which you can derive a formula that can be tested against reality.

So, in simply terms, can you explain how ether drift moves objects on a round or flat earth, and how they curve in different directions on either side of the equator?

Edit

I'm awkwardly aware that I'm deviating from the topic of Bob Knodel and laser gyros here. After dinner I might start a new thread




16
Flat Earth General / Re: Bob Knodel and the laser ring gyroscope
« on: March 13, 2019, 08:56:55 AM »
Sorry Sando, but I don't "get" your statement ...

"Laser gyros employ the CORIOLIS EFFECT formula for a SAGNAC interferometer"

For RLG, we are talking about the timing of counter-propgating light beams around a loop in the housing. If the gyro is rotating the 2 beams take different times to return to the origin producing a phase shift, which can then be used to derive the rotation rate. This is the sagnac effect. As I understand it this is how a laser gyro works. It's not the coriolis effect. TBH it doesn't really matter what you call it - laser gyros can measure rotation. End of.

The coriolis effect is describing the paths objects take on the earth. Mainstream science explains this with a rotating earth. You're saying the cause is a rotating ether instead.

Can you please give a summary, in your own words, of the ether drift experiment and how it moves physical objects? (maybe best in another thread).

But thanks, at least, for replying without a load of copy and paste. Much easier to follow.

Sorry, crossed with EMS. He asks a good question - answer that one first!

17
Flat Earth General / Re: Bob Knodel and the laser ring gyroscope
« on: March 13, 2019, 06:49:54 AM »
All

Can we please do the "nitty gritty" of the Sagnac and Coriolis effects in a separate thread. There's no need for formulas and derivations here.

As I understand it......

Bob Knodel use a laser gyro for his test. Laser gyros employ the sagnac effect to detect rotation of the gyro. The gyro was in a fixed position wrt to the earth. The test detected a rotation.

The coriolis effect is due to viewing things from a rotating reference frame. In our case both the earth and the viewer are rotating. It is the rotating earth that is the cause of the observed coriolis effect. It affects all things in that frame, not just light. Some people, despite evidence,  still believe light travels through an ether. If the coriolis effect was due to a rotating ether wouldn't it only affect light? On the contrary we see the coriolis effect with bullets, artillery shells, storms etc etc. If the earth was stationary, a real force would have to be applied to objects with mass for them to describe the observed curved paths. How does the ether apply this force?

There you go - no formulas!

18
Flat Earth General / Re: Bob Knodel and the laser ring gyroscope
« on: March 12, 2019, 11:19:50 PM »
Can you PLEASE start a separate thread for the Sagnac merry-go-round! It's most frustrating to have multiple threads derailed by this.

19
Flat Earth General / Re: Bob Knodel and the laser ring gyroscope
« on: March 12, 2019, 12:03:18 AM »
Can you please have this discussion about the sagnac effect elsewhere? Not that it hasn't been done to death on multiple threads before!

20
Flat Earth General / Re: Bob Knodel and the laser ring gyroscope
« on: February 21, 2019, 03:49:51 AM »
Go on Sandy, have a go at answering JBs step-by-step derivation. As youíre so sure youíre right, it will be easy to show heís a fool no?


21
Flat Earth General / Re: Apollo 16 floodlight failure?
« on: April 02, 2018, 04:58:58 AM »
Right, here goes....

Without trawling in depth through this whole thread, and I can only speak with authority about Europe and EASA rules but.....

The ZFT type rating sim course at an approved TRTO (type rating training organisation) culminates in an LST (Licence Skills Test) followed by a ZFT (zero flight time) base training sim detail - circuits and bumps replacing the need to do this in an empty but real aircraft. This gets the successful candidate the necessary paperwork to toddle off to their State's local license issuing authority and have said type rating formally added to their licence.

There then follows a period of Line Flying Under Supervision (LIFUS), the first few sectors of which must carried out with a LIFUS qualified TRE (type rating examiner). These are real commercial sectors with passengers on board. After those sectors the rest of the line flying course can be carried out by non-LIFUS trainers. The course culminates in a line check after which the now fully fledged skipper/co-pilot is out of the training system and on their own.

Now, in the old (pre-ZFT) days these first sectors would also have a 3rd pilot on board to help with the workload of the trainer, and to nip into the seat should the trainer become incapacitated. With the advent of ZFT this is now only necessary in certain circumstances depending on the previous experience of the candidate, and also depending on internal company guidelines.

So, Cahaya is quite correct in that the first time a candidate who has completed a ZFT type rating course, onto say a B777, actually lands a real B777 will be on a commercial flight with passengers. This is under the supervision of a LIFUS instructor. If the instructor were to become incapacitated there is no safety pilot, and the ZFT course allows the candidate to do it on their own - the sims are that good. Totallackey is also correct in saying that the first landing is under supervision. You're arguing about different things.

I did base training on real empty aircraft for the BAC1-11 and DC-10, and have done ZFT courses for the B737 and B777. I am currently a LIFUS qualified TRE on the B777, so I hope I know what I'm talking about.

Quite what this has to do with the Apollo program I'm not sure - the guys were all test pilots and quite used to flying real things for the first time......for real!


22

This is very silly when evolution is used as the reason. Evolution wanted the animal to reach the high food? Lol, how about no Scott. (This isn't directed at you shifter, just using your quote.)

Evolution wants nothing, evolution does not care, evolution has no will to survive or care for any other creatures survival. Evolution is simply a bag of raw ingredients being shook for a very long time hoping to make something usable.

This would go down to my thread a while back, of how evolution is a religion. It is simply switching one God for another...

Maybe the reason we are always having to add intelligence, desire, will, motivation to us and everything else being on Earth is because there was an intelligent designer.

BHS, - it's pretty clear from this post, and others from you in this thread, that you really don't understand much about evolution - what it is and how it works.

This is an excellent website that will walk you through the basics

https://evolution.berkeley.edu/evolibrary/article/evo_01

I can also very highly recommend Dawkins' book "The Greatest Show on Earth - The Evidence for Evolution". If you PM me I can probably email you a copy!

https://www.amazon.com/Greatest-Show-Earth-Evidence-Evolution/dp/1416594787/ref=sr_1_1?s=books&ie=UTF8&qid=1520577215&sr=1-1&keywords=greatest+show+on+earth

edit

I know some people are put off by Dawkins' "style", especially his rather strident approach during religious debates. But please trust me, this book is nothing like The God Delusion in its style. Dawkins is a wonderful science educator and The Greatest Show on Earth is beautifully written. Have a read of the amazon reviews from the link above and give it a go.

I've also just been having another "play" with the evolution website linked above. Again, really good.

23
Flat Earth Debate / Re: Emotion
« on: March 08, 2018, 06:37:19 AM »
Yep, question everything and don't just believe something that somebody tells you.

Well, that's all well and good but at the end of the day you have to ask yourself "where is the evidence leading me?"

Science is the application of rational thinking and the respect for evidence.

Michael Shermer (Skeptics Society) has taken an idea from Carl Sagan and formulated a "baloney detection kit" that goes like this....

1. How reliable is the source of the claim?
2. Does the source make similar claims?
3. Have the claims been verified by somebody else?
4. Does this fit with the way the world works?
5. Has anyone tried to disprove the claim?
6. Where does the preponderance of evidence point?
7. Is the claimant(s) playing by the rules of science?
8. Does verifiable evidence exist?
9. Are personal beliefs driving the claim?

24
Flat Earth General / Re: Kersti Kaljulaid and Brian Cox Similarity
« on: March 08, 2018, 06:25:27 AM »
May God damn that president son of whore bitch to infinitive.

.... yeah, where she can be made to preach from the pulpit for eternity about verbs to the gathered conjugation.

25
If someone from A TV calls me as a flat earth believer and asks me something like this, then I'm sure I can take his head off.

I think you've got the wrong end of the stick. It's a phone IN show not phone OUT show. He called them, not the other way around.

Would love to see you have a discussion with any of the presenters there - go on go on!

26
What is AXP?
Who is Matt Dillahunty?
Why are you sure he would not have been so patient?

AXP - Atheist Experience. Phone in discussion and website/blog based in Austin TX. Thought it was reasonably obvious from the title. Evidently my bad. http://www.atheist-experience.com

Matt Dillahunty - one of the presenters. Thought he was famous enough. My bad.

Patience - My opinion, probably my bad too - I'm married so am used to being wrong. ;D


27
This is the first time I've seen a discussion about FE on AXP. I'm sure Matt Dillahunty would not have been so patient!

Anyway, make a coffee and enjoy!


29
Flat Earth General / Re: Not Trolling-Curious About Flat Earth Theory
« on: March 05, 2018, 03:31:15 AM »
So do you think a sensible design feature for an aircraft is to have have front windows that distort the view for the pilot?

30
Technology, Science & Alt Science / Re: AI chatbots...
« on: February 24, 2018, 04:53:12 AM »


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