set3 - Chem 6A Presentation#3 Overview Chapter 1 The...

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Chem 6A Presentation #3 2007-10-03 1 Overview Chapter 1: The Quantum World Does light behave more like particles or waves? Does matter behave more like particles or waves? Can we always be sure where a particle is located?
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2 Does light behave more like particles or waves? Incandescence : glow due to thermal energy These approximate black-body radiation:
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3 Does light behave more like particles or waves? Plot of black-body radiation spectra at several temperatures
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4 Does light behave more like particles or waves? The Stefan-Boltzmann law : power (energy/time) of black-body radiation as function of temperature . Stefan-Boltzmann law: Power Area T 4 Power Area =  T 4  = 5.67 × 10 8 W m 2 K 4
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5 Does light behave more like particles or waves? Wien's law : wavelength at which black body emits maximum amount of radiation, as function of temperature . Wien's law: max 1 T max = b 1 T T max = b b = 2.90 × 10 3 K m
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6 Does light behave more like particles or waves?
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