Bremsstrahlung and X-Rays
[M | t+ | ★★★]
X-rays are given off by the stopping of electrons in the Maltese Cross CRT; a glass plate in front of detector shows they are "soft" x-rays.
[In-Depth Description]
Green Glass Candy Dish
[M | t+ | ★★]
This radioactive uranium glass glows beautifully when illuminated by a UV lamp; use as a prop for Becquerel's discovery.
[In-Depth Description]
α, β, γ, n Sources and Detection
[S/M | t+ | ★★★]
Radioactive sources with Geiger counter or spark chamber detection.
[In-Depth Description]
α, β, γ Penetration and Shielding
[M | t+ | ★★★]
Testing the effect of different materials in blocking radiation.
[In-Depth Description]
γ Ray Inverse Square Law
[M | t++ | ★★★]
Testing of γ ray intensity with Geiger counter at various distances from γ source.
[In-Depth Description]
β-Ray Deflection
[M | t++ | ★★★]
Stream of β-particles pass between poles of magnet.
[In-Depth Description]
Radon's Progeny Decay
[M | t+ | ★★★★]
Observe the decay of airborne radionuclides with a Geiger counter and computer.
Radioactive Human Body
[L | t++ | ★★★]
Detection of radioactive potassium; display on spectrum analyzer.
[In-Depth Description]
Thoron Decay
[M | t+ | ★★★★]
α emission by thoron discharges gold leaf electroscope.
[In-Depth Description]
Neutron Activation of Silver
[L | t+ | ★★★★]
Measurement of half lives of silver isotopes produced by thermal neutron irradiation.
[In-Depth Description]
Cloud Chamber
[M | t++ | ★★★]
Ionization tracks of alpha particles seen in alcohol vapor.
[In-Depth Description]
Cosmic Ray Spark Chamber
[M | t++ | ★★★]
Tracks of cosmic rays seen in spark chamber.
[In-Depth Description]
Uranium Block
[S | t | ★★★★]
238U-Radium series Remains of WWII German Atomic Bomb Project.
Nuclear Fission
[L | t++ | ★★★★]
Array of mouse traps and ping-pong balls; chain reaction triggered by addition of rogue ping-pong ball.
[In-Depth Description]
Contact Us
Mailing Address: Lecture Demonstration Services, Science Center, Rm B-08A, 1 Oxford Street, Cambridge, MA 02138
Campus Location: Science Center B-08A | Tel: (617) 495-5824 | Email: scidemos-at-fas.harvard.edu