7A Quantum Effects

De Broglie Wavelength and Bohr Orbits

demonstration image

De Broglie Wavelength and Bohr Orbits

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

demonstration image

Optical Analog of X-ray Diffraction

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

demonstration image

Laser Diffraction of a Helix

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.