A photoelectron is emitted when light hits the metal surface.
当光照到金属表面时,会发射出一个光电子。
By measuring the kinetic energy of each photoelectron, scientists can infer the binding energies of electrons in a material and identify its chemical states.
通过测量每个光电子的动能,科学家可以推断材料中电子的束缚能,并识别其化学态。