Question

1. choose the best answer. who theorized that light emission and absorption can only be accomplished in discrete quantities of energy? niels bohr max planck albert einstein heinrich hertz 10) choose the best answer. who proved mathematically that there was a direct relationship between matter and energy? albert einstein heinrich hertz niels bohr max planck

Explanation:

1. Max Planck theorized that light emission and absorption occur in discrete energy quantities (quanta), which was a fundamental concept in the development of quantum theory.
2. Albert Einstein proved mathematically the direct relationship between matter and energy with his famous equation $E = mc^{2}$.

Answer:

1. Max Planck
2. Albert Einstein