Is Lorentz contraction objectively real?

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SUMMARY

The discussion centers on the nature of Lorentz contraction in the context of special relativity. Participants argue that Lorentz contraction is a byproduct of a simplistic coordinate system rather than an objective reality. They emphasize that the measurement of length in rapidly moving objects relies on the concept of simultaneity, which is deemed non-existent in the framework of relativity theory. The conversation highlights the importance of understanding the Lorentz transformation and its derivation, as well as the experimental validation of its principles.

PREREQUISITES
  • Understanding of special relativity principles
  • Familiarity with Lorentz transformation
  • Knowledge of simultaneity in physics
  • Basic comprehension of Maxwell's equations
NEXT STEPS
  • Research the derivation of the Lorentz transformation from first principles
  • Explore the implications of simultaneity in special relativity
  • Study experimental validations of Lorentz contraction
  • Examine the relationship between Lorentz contraction and Maxwell's equations
USEFUL FOR

Physics students, educators in relativity, theoretical physicists, and anyone interested in the foundational concepts of special relativity and its implications on measurements of space and time.

Perfectly Innocent
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Those who teach special relativity consider it a very important exercise to have students decide how to measure the length of a rapidly moving object. That's religious indoctrination and a wrongheaded approach to physics. The theoretical process that physicists talk about to measure the length of a rapidly moving object requires belief in simultaneity. In actual reality, according to the math of relativity theory, simultaneity doesn't exist.

Lorentz contraction is just a peculiarity of a simplistic coordinate system that physicists believe in.

http://www.everythingimportant.org/relativity/special.pdf

Eugene Shubert
 
Physics news on Phys.org
Oh, for Pete's sake, not another one.

Perfectly Innocent said:
Those who teach special relativity consider it a very important exercise to have students decide how to measure the length of a rapidly moving object.

We also consider it a very important exercise to have students derive the Lorentz transformation from first principles.

That's religious indoctrination and a wrongheaded approach to physics.

It's neither of those things, if you consider my remark above. Students don't just use the Lorentz transformation, they are required to know where it comes from and why they use it.

The theoretical process that physicists talk about to measure the length of a rapidly moving object requires belief in simultaneity. In actual reality, according to the math of relativity theory, simultaneity doesn't exist.

Wrong. According to SR, simultaneity is relative. That does not mean it does not exist.

Lorentz contraction is just a peculiarity of a simplistic coordinate system that physicists believe in.

Yes, we believe in it because it preserves the form of Maxwell's equations under changes of inertial frames, and because both the LT and the postulates from which it is derived have been experimentally verified.

For future reference, PF is not a place to post crackpot attacks against scientific theories. When I say "crackpot attack", I mean a criticism that has no experimental or valid mathematical basis.
 

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