PAP Physics Review Ch 23&25 – Atomic and Nuclear

1. PAP Physics Review Ch 23&25 – Atomic and Nuclear • Wave particle duality • Energy of a photon E  f • Light intensity determines number of photons per second; frequency determines energy per photon; all photons travel at the same speed • Photoelectric effect • Blackbody radiation and the ultraviolet catastrophe • Compton effect • de Broglie wavelength; =h/p=h/mv • Energy level diagrams, line-emission spectra and spectroscopy • Alpha, beta, and gamma decay • Know how each affects mass # and atomic # • Half-life • Strong nuclear force • E=mc2 • Fission and fusion Kmax=hf - =hft  = work function  minimum amount of energy required to remove electron from a metal ft= threshold frequency  minimum frequency that will eject electrons from a specific metal