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Why do accelerated charges emit e/m radiation?

by sor2char
Tags: accelerated, charges, e or m, emit, radiation
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sor2char
#1
Jul2-04, 10:22 AM
P: 5
Hi first time post here and the site is awesome.
Question is in the title really. Im a second year physicist at UMIST, manchester, England and worry about why an accelerated charged particle loses energy via e/m radiation. For example Bohr's model of the atom consisting of electrons physically orbitting the nucleus was proved incorrect as the elctrons would spiral towards the centre.
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DarkEternal
#2
Jul2-04, 10:58 AM
P: 54
the purcell text i used this year had a very good explanation based in relativity, somewhat replicated at this site: www.chem.yale.edu/~cas/jenkins.html

basically, electromagnetic disturbances propagate at the speed of light. so the information that the charge (and the field from the charge) has acclerated reaches a certain point away from the charge at a later time, indicated by the picture to the right. this creates a sort of wavefront.


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