the genesis of

Photoelectric Effect

Line Spectra

quantum theoryBlackBody Radiation

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PhotoElectric Effect

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

Red Light

Wave Theory

Photon TheoryPredictions

Predictions

Light is an extended electromagnetic wave.

Light is a packet of energy.

What is the slope of the line in the graph?

Threshold Frequency

The PhotoElectric Effect

Finding Planck's Constant

Energy Level Diagram

E1

E2

E3

E4

E5E6

Hydrogen Spectrum

Balmer Series“Visible Light”