/sci/ - Science & Math » Thread #14339680

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Anonymous Sun 27 Mar 05:27:30 2022 No.14339680 View Reply Original Report

Quoted By: >>14343435

Could you send information faster than the speed of light with an extremely long stiff rod or do the pushing/pulling forces travelling down the rod still only propagate at the speed of light?

Anonymous

Anonymous Sun 27 Mar 2022 05:36:52 No.14339694 Report

Quoted By: >>14339702

The latter.

Anonymous

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Anonymous Sun 27 Mar 2022 05:42:40 No.14339702 Report

Quoted By: >>14340213

>>14339694
What if you were on a rocket going .9x the speed of light and you emitted a beam of light in the same direction you were travelling

Anonymous

Anonymous Sun 27 Mar 2022 11:16:51 No.14340213 Report

Quoted By: >>14341760

>>14339702
The beam would still go at c. It's the basic principle of special relativity.

Anonymous

Anonymous Sun 27 Mar 2022 12:44:34 No.14340387 Report

Quoted By:

Some guy on YouTube did exactly that experiment
https://www.youtube.com/watch?v=DqhXsEgLMJ0

Anonymous

Anonymous Sun 27 Mar 2022 20:14:10 No.14341760 Report

Quoted By: >>14341765

>>14340213
I don't understand, how do the perspectives of people on the rocket and people watching from some other reference frame end up agreeing

Anonymous

Anonymous Sun 27 Mar 2022 20:16:56 No.14341765 Report

Quoted By:

>>14341760
That's why you observe length contraction. Since the speed looks the same the only thing that can change is space.

Anonymous

Anonymous Mon 28 Mar 2022 09:05:13 No.14343435 Report

Quoted By:

>>14339680
The force on the rod is transmitted at the speed of sound in that material.

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