Text: "Determining the age of gas lantern mantles using gamma-ray analysis." Using the buildup and decay of the daughters in the thorium decay series, the age of a gas lantern mantle can be determined. Information of importance to the watergas approach to free energy. Thorium lowers the burn temperature of hydrogen. American Journal of Physics. 51(6), June 1983. p. 538-542.

See Also: radiation, radioactivity, decay, thorium, mantles, lanterns, watergas.

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