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OAT Physics
Chapter 11 - Atomic Phenomena
Term | Definition |
---|---|
Planck's constant h | = 6.63E-34 Js |
Wein's displacement law | lambda peak T = constant = 2.9E-3 mK |
Stefan-Boltzman Law | E = sigma TE4; sigma = 5.67E-8 J/sm2K4 |
Photoelectric Effect | when light of high freq hits a metal and e- pop off the metal |
threshold freq | min freq needed for e- to pop off |
Eph = | hc/lambda = hf |
Kph = | hf-W |
W = | hf(threshold) |
Bohr's E eq for H | E = -13.6 eV/n^2 |
an e- jumps from higher E lvl to lower E lvl | when it emits a photon |
an e- jumps from low to high E lvl | when it absorbs a photon |
hc | 1240 eVnm |
h (in eV) | = 4.14E-15 |