positronium
a river running in Finland and Russia
(physics, chemistry) An exotic atom (specifically, an onium) consisting of a positron (anti-electron) and an electron, as a particle–anti-particle bound pair with no nucleus.
Alternative spelling of leukocoria
A surname.
研究チームは、高精度分光実験で、電子と陽電子から成る核を持たない結合粒子対である陽電子原子の異常な崩壊パターンを観測した。
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