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23 Quantum Physics
Chapter Outline
23.1 Blackbody Radiation and Planck’s Quantum Hypothesis
23.2 PHOTONS AND THEPHOTOELECTRICEFFECT
23.3 WAVE-PARTICLEDUALITY
23.4 REFERENCES
FIGURE 23.1
A copper vapor pump laser used in an
atomic experiment.As science began to look at very small sizes down to the scale of an atom, our previous intuition about matter broke
donw. Quantum mechanics is the solution to what seemed like inconsistent behavior of atoms and light, that resolves
dilemmas over what is a wave and what is a particle. Lasers create a precise wavelength due to quantum mechanics,
and are increasingly found throughout everyday life. This chapter covers black body radiation and Planck’s quantum
hypothesis, photons and the photoelectric effect, and wave-particle duality.