Description: 20 世紀初，理論物理學家意識到，每一種粒子都應該有一種相應的反粒子——一種質量相同，但性質完全相反，特別是電荷相反的粒子。幾年後，人們發現了電子的反粒子——正電子，其質量與電子相同，但電荷相反。對於某些中性粒子，如光子，其反粒子就是其自身。當粒子和相應的反粒子相遇時，它們會湮滅形成光子。反粒子構成反物質，而我們的宇宙似乎主要由物質而不是由反物質構成。而這一切之所以發生的細節，仍是一個正在研究的課題。

Related Terms:

• Matter
• Particle
• Particle Physics
• Electron

Term and definition status: The original definition of this term in English have been approved by a research astronomer and a teacher
The translation of this term and its definition is still awaiting approval

This is an automated transliteration of the simplified Chinese translation of this term

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