Noun
the spontaneous disintegration of a radioactive substance along with the emission of ionizing radiation
Source: WordNetAll actinides are radioactive and release energy upon radioactive decay; naturally occurring uranium and thorium, and synthetically produced plutonium are the most abundant actinides on Earth. Source: Internet
Any extra fantasy outside the cardinal assumption immediately gives a touch of irresponsible silliness to the invention." citation Though Tono-Bungay is not a science-fiction novel, radioactive decay plays a small but consequential role in it. Source: Internet
Another danger of actinium is that it undergoes radioactive decay faster than being excreted. Source: Internet
Betavoltaics are a type of solid-state power generator which produces electricity from radioactive decay. Source: Internet
As an example, the radioactive decay of carbon-14 is exponential with a half-life of 5,730 years. Source: Internet
Because much of the heat is provided by radioactive decay, scientists postulate that early in Earth's history, before isotopes with short half-lives had been depleted, Earth's heat production would have been much higher. Source: Internet