Nature seems to keep piling on these particles [having the same properties but heavier masses] as if to drug us.
QED: The Strange Theory of Light and Matter, Chapter 4 (p. 146), Princeton University Press. 1985
Nature seems to keep piling on these particles [having the same properties but heavier masses] as if to drug us.
QED: The Strange Theory of Light and Matter, Chapter 4 (p. 146), Princeton University Press. 1985