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
1
Ehc
hfE
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
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