The Discovery of Radioactivity
A talking head discussion of the discovery of radioactivity and the people who discovered. it. Duration: 4:30.
Three Different Types of Radiation
The properties of three different types of radiation are discussed. Duration: 4:18.
Penetrating Powers of Radiation
Radioactive samples are held up to a Geiger counter to demonstrate the differing penetrating powers of different types of radiation. Duration: 2:45.
Radiation Occurs Naturally
Discussions of the various origins of radioactivity. Attention is given to how radiation is measured in both rads and rems. Duration: 9:15.
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