becquerel

• 法国物理学家，因发现铀盐发出的射线能使照相底片感光而闻名；也是放射性活度的国际单位。

A proper noun referring to a French physicist known for discovering that rays emitted by uranium salts affect photographic plates.

不可数 · 专有名词

1. C1formalscientific

   Antoine Henri Becquerel (1852–1908), a French physicist who discovered radioactivity, specifically that uranium salts emit rays that affect photographic plates.

   法国物理学家

   • Becquerel's discovery of radioactivity earned him the Nobel Prize in Physics in 1903.
   • The unit of radioactivity, the becquerel, is named after him.
   • Becquerel's experiments with uranium salts laid the foundation for nuclear physics.

2. C1formalscientific

   The SI unit of radioactivity, equal to one radioactive decay per second.

   放射性活度单位

   • The sample had an activity of 500 becquerels.
   • Radiation levels are measured in becquerels per kilogram.
   • One becquerel is a very small amount of radioactivity.