Recent content by hansw

It took me a while to find it. I refer to page no. 98 in Feynman’s “QED the strange theory of light and matter”, the 2006 edition: “It may surprise you that there is an amplitude for the photon to go at speeds faster or slower than the conventional speed, c. The amplitudes for these...

I once heard Feynman say something like: ”c is just the mean value, some photons go slower, some faster”.