Question

@BenCrowell I disagree with your last comment. To follow you, we should never teach Newton's law, because it's of no much interest for modern students ? Your answer is definitely great by the way, even if I would erase the first sentence. I also subtly modify the interpretation usually when discussing with friends. I prefer to argue that neither the atom nor the light field is quantised (in a provocative way), but it's rather the exchange energy between the two sub-systems which is quantised.

This post imported from StackExchange Physics at 2015-03-05 17:37 (UTC), posted by SE-user FraSchelle