3 days, 3 hours ago

Congratulations on finding the blind spot! 

This is the mistake that Einstein has ever made! [dog head]. 

In his famous 1905 paper on electrodynamics of moving bodies, he mentioned that " We can conclude that the cycloidal clock at the equator is slower than a clock placed at the poles of the equator, but the difference is very small 

Then a little calculation shows that the time frequency shift caused by the speed of 460 M / s has reached




Every 25000 years, clocks of this level will have an error of one second every 25000 years. Any modern commercial atomic clock can reach this level, so if Einstein was right, the experiment would have been done long ago. 

As a matter of fact, as soon as people's clock technology reaches the standard, the tests on relativity can be said to be blooming everywhere, but the results completely deviate from Einstein's 1905 prediction: the time on the earth's surface has nothing to do with latitude 
, only related to altitude and aircraft speed (if the experiment is done on an airplane). 

The ingenious thing here is: the earth is an ellipsoid, the equator is almost 21 kilometers away from the center of the earth than the pole! Therefore, although the line speed is faster, it will slow down its time, but further away from the center of the earth will lead to faster time, and these two effects are just! Good! Come on! Go away! 

This is not a coincidence. 


In order to maintain its own stability, general relativity requires that the surface of a rotating fluid ball must be an equipotential surface in the gravitational field, because otherwise, there will be a force in the gradient direction of gravitational potential energy, which will pull the earth into the shape of equipotential surface. On the equipotential surface of gravitational potential, time is always equal. 

If you want to know more, this article has a very careful calculation:

"The equivalence principle as a stepping stone from special to general relativity: A Socratic dialog", S. P. Drake, Am. J. Phys. 74(1), January 2006

PS: a great explanation for this question. I found it on the official website of the flat earth society. I really don't understand the supernatural logic of these people. But thanks to the interesting question of the subject for bringing me today's happiness [smile].

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