正电子

正電子

zhèngdiànzǐ

noun #31,195

Meanings

1 positron (the antiparticle of the electron)
2 positively-charged electron

Characters

positive, correct

(suffix) particle, small thing

Examples

正电子是电子的反粒子。

Zhèngdiànzǐ shì diànzǐ de fǎnlìzǐ.

The positron is the antiparticle of the electron.

正电子发射断层扫描简称PET。

Zhèngdiànzǐ fāshè duàncéng sǎomiáo jiǎnchēng PET.

Positron emission tomography is abbreviated PET.

Tips

usage

Built from 正 'positive' + 电子 'electron' = 'positive electron'. Compare 反质子 fǎnzhìzǐ 'antiproton' and 中微子 zhōngwēizǐ 'neutrino'. Predicted by Dirac in 1928, confirmed by Anderson in 1932 — the first antiparticle ever observed.

Stroke Order

正 zhèng

电 diàn

子 zǐ