什麼是atomic resonance?

Atomic resonance係指，當photo make a collision with an atom的時候

如果photon帶着一份 energy係同果個atom 的energy level 的difference 係exactly一樣的話

electron will transit from lower energy level to higher energy level with using the energy of photon ( E=hf)

This is called atomic resonance.

如果個energy 唔同個energy level match的話 ，無excitation發生