7D Nuclear Physics – Physics Demos

7D10. Radioactivity
- 7D10.10 Geiger Counter And Samples Listen to a Geiger counter when radioactive samples are tested.
- 7D10.11 Sources of Radioactivity Obtain radioactive ore or old radon seeds.
- 7D10.55 Coin Toss Half-Life Use coins to model half lives.
- 7D10.60 Nuclear Shielding Different barriers are placed between a gamma source and a detector.
- 7D10.61 Beta and Gamma Ray Absorption A set of absorbers for showing alpha, beta, and gamma absorption.
7D20. Nuclear Reactions
- 7D20.05 Marble Chain Reaction A chain reaction simulation made from rows of marbles on an inclined board. Start an avalanche with a single marble.
- 7D20.10 Mouse Trap Chain Reaction A large number of mousetraps set with silicone balls in an acrylic enclosure. Trigger with a single “neutron.”
- 7D20.20 Dominoes Chain Reaction A wisp of cotton knocks over a small domino starting a chain reaction in which each succeeding domino is 1 1/2 times larger in all dimensions.
- 7D20.30 Uranium Model A sphere contains internal mechanisms to eject two balls (electrons) after a ball is dropped in (thermal neutron.)
7D30. Particle Detectors
- 7D30.60 Diffusion Cloud Chamber A chamber supersaturated with alcohol vapor is cooled with an alcohol/dry ice bath at the bottom.
7D40. NMR
7D50. Models of the Nucleus