THEORY

• It was thought that light had a wave nature.

• The theory behind the Compton Effect was to prove that light has a particle nature, also.

Einstein’s Equation

• ∆E = ∆mc^2 = hf = hc/λ

– E=Energy– M=mass– C=speed of light– H=plank’s constant– λ = wavelength

• Loss of Energy = Increase in Wavelength

Compton Effect

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angle of scattering (degrees)

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y Predicted Curve

Compton Effect

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angle of scattering (degrees)

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Predicted CurveExperimental Data

PIXE

Proton Induced X-Ray Emissions

Copper

Nickel

Gold (L)

Silver

IronZinc

1943 Steel Penny

Lead

Tin

Antimony

Pewter Medal 1st Place!!!