7A Quantum Effects

Solar cells - Video

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Catalog: 
7A10.40
Location: 
3_1
Video Encyclopedia :Shine a bright light on selenium solar cells and run a small motor.

Millikan oil drop - Video

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Catalog: 
7A15.10
Location: 
3_1
Video Encyclopedia :The real experiment and an animated sequence explaining the apparatus.

Microwave barrier penetration - Video

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Catalog: 
7A50.20
Location: 
3_1
Video Encyclopedia :Microwaves are totally reflecting off a plastic prism until another is touching the first.

Electron diffraction - Video

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Catalog: 
7A60.10
Location: 
3_1
Video Encyclopedia :Rings are obtained from a commercial tube with a graphite target.

De Broglie Wavelength and Bohr Orbits

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Catalog: 
7A50.32
Location: 
A sinusoidal wave is printed on transparent material that can be wound up. As the radius of the windings gets bigger the waves add constructively (line up) or destructively (not lined up) like the De Broglie wavelengths in the Bohr orbit of the hydrogen atom.

Optical Analog of X-ray Diffraction

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Catalog: 
7A60.24
Location: 
Ga3
Two diffraction gratings are oriented at right angles and a small lecture laser projects a pattern of dots similar to x-ray diffraction.

Laser Diffraction of a Helix

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Catalog: 
7A60.930
Location: 
Ga3
The X-ray diffraction pattern of DNA is simulated by the difraction pattern of a laser's light on a coiled filament of a incandescent bulb.

Photoelectric effect in zinc - Video

demonstration image
Catalog: 
7A10.10
Location: 
3_1
Video Encyclopedia :Zinc plate on an electroscope, charged negative, glass UV barrier.