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The formula defines the energy E of a particle in its rest frame as the product of mass (m) with the speed of light squared (c 2). Because the speed of light is a large number in everyday units (approximately 300 000 km/s or 186 000 mi/s), the formula implies that a small amount of mass corresponds to an enormous amount of energy.
The equation sets forth that the energy of a body at rest (E) equals its mass (m) times the speed of light (c) squared, or E = mc 2. If a body gives off the energy L in the form of radiation, its mass diminishes by L/c 2. The fact that the energy withdrawn from the body becomes energy of radiation evidently makes no difference, so that we are ...
This equation holds for a body or system, such as one or more particles, with total energy E, invariant mass m 0, and momentum of magnitude p; the constant c is the speed of light. It assumes the special relativity case of flat spacetime [1] [2] [3] and that the particles are free.
David Bodanis is an American speaker, business advisor and writer of bestselling nonfiction books, notably E=mc 2: A Biography of the World's Most Famous Equation, which was translated into 26 languages. Originally from Chicago, he received an undergraduate education in mathematics, physics and economics at the University of Chicago (AB 1977).
Why Does E=mc²? (And Why Should We Care?) is a 2009 book by the theoretical physicists Brian Cox and Jeff Forshaw . [ 1 ] This was the first full-scale book from Professors Cox and Forshaw.
First appearance (page 443) of the equation E = mc 2. This paper also marks the beginning of Einstein's long development of general relativity; here he derives the equivalence principle, gravitational redshift, and the gravitational bending of light. Einstein returns to these topics in 1911. Schilpp 22; CP 2, 40: 1907
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E = mc 2 is the equation of mass–energy equivalence. E=MC 2 or E=MC2 may also refer to: Music. E=MC ...