1. The problem statement, all variables and given/known data Using Maxwell's theory of EM waves, show that an electron while revolving in Bohr's orbit does not radiate any energy. It radiates energy only when it jumps from a higher energy orbit to a lower energy orbit. 2. Relevant equations [PLAIN]https://upload.wikimedia.org/math/3/0/c/30c24016df2b868da4e3a8ec58e45ce7.png[PLAIN]https://upload.wikimedia.org/math/9/1/7/917f254fb7d2a63176d640035f6117df.png [Broken] [PLAIN]https://upload.wikimedia.org/wikipedia/commons/thumb/8/86/OiintLaTeX.svg/25px-OiintLaTeX.svg.png[PLAIN]https://upload.wikimedia.org/math/3/0/c/30c24016df2b868da4e3a8ec58e45ce7.png[PLAIN]https://upload.wikimedia.org/math/4/1/a/41a8ca3e07052a7ec3f34d41ad24b3a6.png [Broken] 3. The attempt at a solution Firstly, I thought Maxwell's theory and electromagnetism wasn't applicable to atoms anyway and were discarded because they couldn't justify why the electron didn't collapse into the nucleus as well as radiate energy. Cos electrons are supposed to be probability functions etc. But, the answer says the following, which I don't understand how it falls out of the above equations. Also I don't understand why this is even a valid question. Bohr's orbit is a circular orbit in which current I = ev/2πr which is constant. So, magnetic field in the orbit is constant. During transition, frequency of revolution v/2πr changes so magnetic field changes hence radiation is emitted.