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2.9 Emission Spectra, Heisenberg Uncertainty, Photoelectric Effect

Lesson Summary

Heinsenberg Uncertainty

• It is impossible to determine a subatomic particle’s position and its momentum with perfect accuracy.

Photoelectric Effect

Φ = work function (the minimum amount of energy required to ionize the electron)

• In order to expel an energized electron, the Kinetic Energy must be greater than zero.