Radioactivity

From Fresh Dictionary

Contents 1 English 1.1 Noun 1.1.1 Related terms 1.2 Translations 1.3 See also

English

Noun

radioactivity

1. Spontaneous emission of radiation as a consequence of a nuclear reaction, or directly from the breakdown of an unstable nucleus.
2. The radiation so emitted; including gamma rays, alpha particles, neutrons, electrons, positrons, etc.

Related terms

• radioactive

Translations

• Chinese: 放射线 (fàng shè xiàn)

See also

• half-life

zh:radioactivity