Discovered
1898Density
5.0 g/cm3Melts
700 °C
- 1292 °F
- 973 °K
Boils
1140 °C
- 2084 °F
- 1413 °K
Contributed by Ea Nasir
A Mauthe brand alarm clock with Radium paint. First photo in the daylight, second photo in the dark showing the glow more easily.
Contributed by collector no. 2
Old Radium watch hand. A small amount of Radium compounds were mixed in with fluorescent paint and applied to the top. When the radioactive Radium decays, the paint absorbs some of the energy and glows a faint green light.
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