January 30, 2013

Cosmological Coincidence

Cosmological coincidence: The ratio of the strength of the electric force to that of the gravitational force between two charged particles is very close to the ratio of the size of the Universe to the size of an electron. First noted by Paul Dirac.

[DIRAC and HEISENBERG are wallowing in a springtime meadow.]

HEISENBERG: [Gazes skyward in a distracted fashion. Lifts one arm and slowly undulates hand.] Hey, did you ever think that maybe the ratio of the strength of the electric force to, like, that of the gravitational force between two charged particles is . . . very close to the ratio of the size of the Universe to the size of an electron? Dude?

DIRAC: [Pauses before replying.] Yeah, man. I noted it.