I don’t know, either, but here is an article written by one of our moderators past, Hanne:
http://www.avmsurvivors.org/t/photons-vs-protons-what-s-the-difference/1231
I don’t know, either, but here is an article written by one of our moderators past, Hanne:
http://www.avmsurvivors.org/t/photons-vs-protons-what-s-the-difference/1231