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Properties of Radiation

The three videos below feature demonstrations of the properties of the radiation emitted from three different sources: Plutonium-239; Strontium-90; Radium-226.
 
The first video demonstrates the range of the three radiations in air.
 
 
The second video demonstrates the penetration of radiation from each of the sources through different materials: Tissue paper, Aluminium and Lead.
 
 
The final video is a compilation of the above two.
 
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