radioactivity
/ˌreɪdɪəʊakˈtɪvɪti/
The release of energy from unstable atoms.
“The scientist carefully measured the radioactivity in the glowing rocks.”
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inoh
inoh
/ˌreɪdɪəʊakˈtɪvɪti/
The release of energy from unstable atoms.
“The scientist carefully measured the radioactivity in the glowing rocks.”
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