4 ms·
An electron-positron bound system decays in under a nanosecond: https://en.wikipedia.org/wiki/Positronium https://en.wikipedia.org/wiki/Positronium
by eternauta3k 6y ago
An electron-positron bound system decays in under a nanosecond:
https://en.wikipedia.org/wiki/Positronium https://en.wikipedia.org/wiki/Positronium
- at_a_remove 6y ago"Delicately."