rapidity
- Noun. speed, swiftness; the condition of being rapid.
- Noun. (physics) A measure of velocity relative to the speed of light.
- Noun. (physics) A measure of the velocity of a particle in a beam relative to the beam#s axis.
This is an unmodified, but possibly outdated, definition from Wiktionary and used here under the Creative Commons license. Wiktionary is a great resource. If you like it too, please donate to Wikimedia.
This entry was last updated on RefTopia from its source on 3/20/2012.