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the genesis of Photoelectric Effect Line Spectra quantum theory BlackBody Radiation

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Page 1: the genesis of BlackBody Radiation quantum theory · the genesis of Photoelectric Effect Line Spectra quantum theory BlackBody Radiation = + = + PhotoElectric Effect = = Why the Wave

the genesis of

Photoelectric Effect

Line Spectra

quantum theoryBlackBody Radiation

Page 2: the genesis of BlackBody Radiation quantum theory · the genesis of Photoelectric Effect Line Spectra quantum theory BlackBody Radiation = + = + PhotoElectric Effect = = Why the Wave

+=

= +

PhotoElectric Effect

=

=

Page 3: the genesis of BlackBody Radiation quantum theory · the genesis of Photoelectric Effect Line Spectra quantum theory BlackBody Radiation = + = + PhotoElectric Effect = = Why the Wave

Why the Wave Theory of Light fails to explain the PhotoElectric Effect.

Red Light

Page 4: the genesis of BlackBody Radiation quantum theory · the genesis of Photoelectric Effect Line Spectra quantum theory BlackBody Radiation = + = + PhotoElectric Effect = = Why the Wave

Wave Theory

Photon TheoryPredictions

Predictions

Light is an extended electromagnetic wave.

Light is a packet of energy.

Page 5: the genesis of BlackBody Radiation quantum theory · the genesis of Photoelectric Effect Line Spectra quantum theory BlackBody Radiation = + = + PhotoElectric Effect = = Why the Wave

What is the slope of the line in the graph?

Threshold Frequency

The PhotoElectric Effect

Finding Planck's Constant

Page 6: the genesis of BlackBody Radiation quantum theory · the genesis of Photoelectric Effect Line Spectra quantum theory BlackBody Radiation = + = + PhotoElectric Effect = = Why the Wave

Energy Level Diagram

E1

E2

E3

E4

E5E6

Hydrogen Spectrum

Balmer Series“Visible Light”