Energy, Rest Mass, 3-momentum, and 3-speed From 4-momentum
The 4-momentum of a particle is
where is the particle rest mass, is the momentum in 3-space, and
is the energy of the particle.
Read more about this topic: Lorentz Scalar
Famous quotes containing the word rest:
“When the weather is bad as it was yesterday, everybody, almost everybody, feels cross and gloomy. Our thin linen tentsabout like a fish seine, the deep mud, the irregular mails, the never to-be-seen paymasters, and the rest of mankind, are growled about in old-soldier style. But a fine day like today has turned out brightens and cheers us all. We people in camp are merely big children, wayward and changeable.”
—Rutherford Birchard Hayes (18221893)