Uploaded December 2009 | Updated September 2026, 7 minutes ago
A video demonstrating the range in air of radiation emitted from three different sources: Plutonium-239, an alpha source; Strontium-90, a beta source; and Radium-226, a gamma source.
A video demonstrating the range in air of radiation emitted from three different sources: Plutonium-239, an alpha source; Strontium-90, a beta source; and Radium-226, a gamma source.










