# Poynting vector - uniform vs accelerated charge

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## Main Question or Discussion Point

I am trying to understand why an accelerating charge emits radiation/electromagnetic waves but a uniformly moving one does not. I saw one video on Youtube where it seemed that it was explained by the fact that with a uniformly moving charge the Poynting vector was pointing 'in to the volume' - no energy was flowing out - but that with an accelerating charge the Poynting vector was pointing 'out of the volume' hence there was energy out that would be detected as electromagnetic waves. Is that the gist of it?