A positron is a tiny piece of matter, as light as an electron, but with a plus charge instead of a minus one. You can think of it as the electron’s mirror twin.

A positron positron（正電子） is是 a tiny piece of matter一種微小的物質粒子， as light as an electron跟電子一樣輕， but but 帶的是 with a plus charge instead of a minus one正電荷而不是負電荷。You你 can think of it as可以把它想成是 the electron’s mirror twin電子的鏡像雙胞胎。

Though actually, it is not just a curiosity in a textbook. When a positron meets an electron, the two disappear and leave a flash of energy; hospitals use that fact in a kind of body scan.

Though actually不過其實， it它 is not just a curiosity in a textbook不只是課本裡的一個趣味知識。When a positron meets an electron當一個 positron 遇到一個電子時， the two disappear兩者會一起消失 and而 leave a flash of energy留下一閃能量； hospitals醫院 use that fact in a kind of body scan會利用這個現象做一種身體掃描。

It is not a proton. A proton is heavy and sits in the middle of an atom. A positron is light, and it is the plus-charged partner of the electron.

It它 is not a proton不是質子。A proton質子 is heavy很重， and而且 sits in the middle of an atom位在原子的中央。A positron positron is是 light很輕的， and而且 it它 is是 the plus-charged partner of the electron電子帶正電荷的搭檔。

An American physicist, Carl Anderson, coined the name in 1932 so that people would stop saying antielectron.

An American physicist一位美國物理學家, Carl Anderson Carl Anderson, coined the name in 1932在1932年創造了這個名字 so that people would stop saying antielectron好讓大家不再說「antielectron」。