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:
“It further said, “The inhabitants of Sandwich generally manifest a fond and steady adherence to the manners, employments and modes of living which characterized their fathers,” which made me think that they were, after all, very much like the rest of the world.”
—Henry David Thoreau (1817–1862)