noun
beta particle
Technical term in physics; refers to a high-energy electron or positron emitted during beta decay.
β粒子は、原子核から放出される電子または陽電子です。
Beta particles are electrons or positrons emitted from an atomic nucleus.
Standard scientific notation using the Greek letter beta.
Kana spelling of beta; common in less technical contexts or when Greek letters are unavailable.
From English 'beta particle'. The kanji 粒子 means 'particle'.