radioactivity

Noun

Meaning

the spontaneous emission of a stream of particles or electromagnetic rays in nuclear decay

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Phrases with the word

Examples

After sitting for several years, the radioactivity reduces to a level where extraction of the long-lived isotopes, including technetium-99, becomes feasible. Source: Internet

A fallout shelter is designed to allow its occupants to minimize exposure to harmful fallout until radioactivity has decayed to a safer level. Source: Internet

Any interposing material would have interfered with the detection of radioactivity, since the beta particles emitted by decaying mainC are so weak that half are stopped by a 0.01 mm thickness of aluminium. Source: Internet

Arthur Holmes establishes radiometric dating Although Boltwood published his paper in a prominent geological journal, the geological community had little interest in radioactivity. Source: Internet

After 12 half-lives (43 days), radon radioactivity is at 1/2000 of its original level. Source: Internet

Antineutrinos are another kind of antiparticle created by natural radioactivity (β − decay). Source: Internet

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