An Etymological Dictionary of Astronomy and Astrophysics

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radioactivity

پرتو-ژیرایی، پرتو-ژیرندگی

partow-žirâyi, partow-žirandegi

Fr.: radioactivité

The spontaneous disintegration of certain atomic nuclei, which is accompanied by the emission of either α- or β- particles and/or a γ rays.

→ radio; → activity.

An Etymological Dictionary of Astronomy and Astrophysics
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