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Modern  Physics

Photoelectric Effect

7A10.00 Photoelectric Effect with an 1P39 Phototube Light passes through a colored filter and onto a photocell.
7A10.10 Discharge a Zinc Plate Light is used to discharge a zinc plate.
7A10.40 Solar cell Run a fan motor from a light source shining onto a solar cell

Compton effect

7A20.10 Compton Scattering A gamma ray is scattered by the electrons of a material.

Semiconductors

7A30.10 PN junction An LED is immersed in LN.
7A30.20 Solar Cell Light shines on a solar cell and the energy spins a fan motor
7A30.30 Light on a Semicoductor Change the resistance of a semiconductor with light.

Wave Mechanics

7A50.10 Barrier Penetration and Tunneling A computer software simulation of wave mechanics.
7A50.13 STM A Scanning Tunneling Microscope shows atoms.

Particle/Wave Duality

7A55.20 Single Photon Interference Single photons pass through a double slit.

X-ray and electron diffraction

7A60.10 Electron Diffraction Rings or spots are seen by diffraction through a crystal.

Condensed Matter

7A70.50 Superfluid Helium Helium is pumped below to the lamda point.

Spectra

7B10.10 Line Spectra Emission from He, H2 and Xe tubes are diffracted into lines.
7B10.11 High Pressure Sodium Shows both emission and absorption simultaneously.

Fine Structure Splitting

7B20.10 Zeeman Fine Splitting The diffracted green line from mercury is split by a magnetic field.

Electron Properties

7B35.10 Cathode Ray Tube Deflect an electron beam with a voltage or a magnet.
7B35.50 Electron Momentum Paddle Wheel An electron beam has momentum to push a paddle wheel.

Radioactivity

7D10.10 Geiger Counter Use a geiger counter with an alpha source.

Particle Detectors

7D30.50 Cloud Chamber Show particle tracks from an alpha source or cosmic rays.

NMR

7D40.br  NMR

Models of the Nucleus

7D50.10 Rutherford Scattering A video shows the rutherford experiment.
7D50.40 Rutherford Atom and Thompson Atom A java applet shows the different nuclear models.

Special Relativity

7F10.10 Equivalence Principle Gravity is gone in freefall to allow small forces to act free.
7F10.35 Special Relativity: Magnet and Coil Move a coil or move a magnet to induce a current.

General Relativity

7F20.20 Precession of the Perihelion of Mercury A short video shows what is meant by the precession of the perihelion of mercury.

This web page was last updated on 12/12/05 by JZ.

Please e-mail your comments or suggestions to Gerald_Zani@brown.edu