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Pete,

Pete, the GPS clocks are synchronized in all frames of reference. The ECI frame is only used to synchronize the clocks before gravitational frequency shifts are considered in the ECEF...

Pete,

Of course this is the heart of the problem. Einstein synchronization is based the postulate that the speed of light is measured as a constant for all inertial observers. To keep the speed of...

swivel, perhaps you didn't read the whole article closely. The new findings drive the final nail in the coffin of the MOND-like theories. Modified gravity theories have been unable to explain many...

Pete,

The definition applies to any inertial rest frame in a vacuum.

Pete,

The length of a rod (meter) is defined by the clocks and the speed of light in the rest frame where the meter is...

Pete,

A meter is very well defined in SI units. It is the distance light will travel in 30.6633 cycles of the cesium-133 atom. In order for a clock to beat slower, there must be a greater time...

I think my point was that the particles moving around the circumference of the ring do not follow a decreasing radius as they increase in velocity relative to the lab frame. As their relative...

Pete, I still don't understand something. You say that in the ground frame, the rim 'stretches' so the distance between cleats (or spokes) is not reduced by the Lorentz contraction formula. In other...

I believe CANGAS's statement was concerning a proof of the rim's length contraction in a rotating frame. Synchrotrons regularly accelerate particles to near the speed of light in their rings. The...

Yes it does, Pete. If the deformation of the wheel is just a hallucination predicted by a faulty SR mathematical model, length contraction itself is just a hallucination predicted by a faulty SR...

“ Originally Posted by 2inquisitive
Some fizzist has been on acid if they think the physical shape of the wheel can be deformed without deforming the physical shape of the spokes. ”


Here is...

Pete,

Some fizzist has been on acid if they think the physical shape of the wheel can be deformed without deforming the physical shape of the spokes. Perhaps they were hallucinating?

And,...

Pete is about correct concerning the amount of energy in a lightning strike. Each flash contains about a billion Joules (or a thousand million for some of you Europeans), according to the Univ. Of...

Nevermind, the Ehrenfest paradox has been solved to my satisfaction. :) I just read the paper and found no contradictions with either the relativistic wheel or GPS. Great! The paper is by Robert D....

DaleSpam,

You know we are speaking of strains arising from different Lorentz contraction factors in the system, not angular acceleration, torques, or any real physical strains.

DaleSpam,

Put...

DaleSpam,

OK, let me explain it to you this way. Suppose the track is 10 light-minutes long end-to-end. An observer on the ground could walk up to the track, remove a pin from the track holding...

I didn't find fault with your maths, Dale, just the model you used. You assumed, without proof, that there will be a strain produced by incompressible spokes that causes the rim to stretch. If the...

Fellas, fellas, fellas, what causes your strain? Both of you 'claim', without proof, that your predicted Lorentz contraction of the rim of the wheel is offset because of the 'strain' exerted by the...

DaleSpam,

You presented one interpretation only , the stretched rim, as if it were the only accepted interpretation that agrees with relativity theory. I presented another interpretation, the...

DaleSpam,

Dale, you probably read my response to Pete, but I'll see if I can quickly expand on my line of thought.
I'm sure you and Pete both know I have always objected to the Lorentz...

Pete, I think you are confused. The The contractions in the moving frame we are speaking of are due to relativistic effects, Lorentz contraction in specific. These effects, in themselves, have...

DaleSpam,

Yes, I can back it up. In Einstein's and Clark's explanation of Ehrenfest's paradox, which you used except for your addition of Hooke's law, the rods attached at one end to the rim are...

Pete,


I will repost my statement:

I disagree, a frame can be inertial, accelerate, then return to inertial again. The observer attached to the tread does just that, accelerating only when he...

DaleSpam,

I know the difference between strain and Lorentz contraction, of course. What you do not seem to understand is that I don't agree that the bottom part of the 'rim' and the track between...

Pete,

Pete, maybe you should read this page from wiki again. I thought we had agreed from our discussions of GPS that rotating frames are non-inertial frames? Here is a quote and a link, notice...

Pete,

Well then, it seems we have just found a way to distinguish between a true rest frame (one in which the rims do not stretch and the spokes do not compress) a moving frame with a pseudo rest...