7 Modern Physics

Phosphor Glow Paper

Catalog: 
7B13.51
Location: 
File
Explore the properties of phosphorescence with this specially coated paper. Glow paper measures 8.5x11 inches.

De Broglie Wavelength and Bohr Orbits

demonstration image
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
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
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.

Diffusion Cloud Chamber - large

demonstration image
Catalog: 
7D30.60
Location: 
Ad4
Supersaturated Environments Lecture hall Cloud Chamber

Curved Space

demonstration image
Catalog: 
7F20.201
Location: 
0-0
A rubber sheet represents Euclidian Space when not stretched. A dowel stretches the rubber sheet at the desired location. Balls can be rolled on the surface to show how space and time are warped. It can be shown that the shortest distance between two points is no longer a straight line.

Six items

demonstration image
Catalog: 
7B11.15
Location: 
Eb5
Absorption of light by a medium

"PASCO" Electrometer (Model ES-9078)

Catalog: 
9B20.13B
Location: 
Dg1

The electrometer has a very high impedance and measures voltage directly in electrostatics demos. It is 1000 times more sensitive than a gold leaf electrometer.