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I was doing the following thought experiment: imagine a particle that moves at a

ID: 1381048 • Letter: I

Question

I was doing the following thought experiment: imagine a particle that moves at a certain velocity. Imagine also that the particle generates a field that propagates at velocity vf. Well, if the particle's velocity is higher than vf then it will interact with its own field if for some reason the particle decelerates (imagine a plane that goes Mach 2 and then "brakes" to zero, it will hear its own sound after a while). But what if the particles's velocity is exactly vf?

My guess is that it will interact with its own field... is this correct?

Explanation / Answer

No.

The filed propogates with light speed.

and No particle can travel with higher speed than the speed of light.

so, The partcilce can never experiance its own filed.

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