Do Accelerating Charges Always Emit Radiation?

AI Thread Summary
Moving charged particles emit electromagnetic radiation when they accelerate or decelerate, but the emission depends on the nature of the accelerating force. Specifically, if the force is due to a uniform gravitational field, the charged particle does not emit radiation. This topic is complex and has been discussed in various threads, indicating that the relationship between acceleration and radiation is not straightforward. The question of why this dependence exists remains challenging to address fully within a physics forum. Understanding these nuances is essential for grasping the behavior of charged particles in different contexts.
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Why does a moving particle particle emit EM-radiation?
 
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This applies to charged particles that are accelerating or decelerating.
 
mathman said:
This applies to charged particles that are accelerating or decelerating.
Whether accelerating charges emit radiation appears to depend on the accelerating force. If the accelerating force is due to a uniform gravitational field, the charge does not appear to emit radiation.

AM
 
It seems this question about acceleration of charges and the emission of EM comes up every so often. It is not as straight forward as one may imagine. I suggest the OP read some of the recent threads on this as there is a lot of information in them, too much to repeat here. I do note though that the question was why? I'm not sure that this can be answered in a physics forum.
 
Andrew Mason said:
Whether accelerating charges emit radiation appears to depend on the accelerating force. If the accelerating force is due to a uniform gravitational field, the charge does not appear to emit radiation.

AM

Why it depends on the accelerating force? if I "drop electron" from the roof of my house what would happen?
 

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