Heisenberg has discussed the coupled double harmonic oscillator, and has shown that the ordinary rules of quantization lead to two non-combining sets of states in one of which the electrons are in phase and out of phase. The energy of the system is successively transferred from one to the other - resonance!
Linus PaulingOnly when I began studying chemical engineering at Oregon Agricultural College did I realize that I myself might discover something new about the nature of the world.
Linus PaulingThe problem of an atomic war must not be confused by minor problems such as Communism versus capitalism. An atomic war would kill everyone, left, right, or center.
Linus Pauling