L5.2 Interpretation of the Darwin correction from nonlocality

[@IntelR]

I think the energy for a distribution of charge has a 1/2 , because if you just do the integral you are counting the same element of charge twice (see Griffiths - Electrodynamics)

[@cikif]

2:57 "... I'm gonna make another -INAUDIBLE- *coordinate system* sort of starting here..."

[@mitocw]

Thanks for your note! The caption has been updated and should be live in the next few minutes.

[@elenaaethrachristou8388]

AMAZING explanation !!!! thank you very much :)

[@yuchuanwei]

why is the radius of electron the Compton length? usually it is considered as the classical radius r0.

[@nr3837]

i guess cause the compton length gives you the minimum length on which you can locate a particle. it follows by the uncertainty priciple.

[@raksahv7860]

Sir said by the end , that we assumed that the electron is a ball of size of the compton wavelength and then calculated to find a term much closer to the previous calculated darwin term. So the assumption may be rough but still quite good. Also he a bit of insight into qft

[@brainstormingsharing1309]

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