Physics.
the energy equivalent to the mass of a particle at rest in an inertial frame of reference, equal to the rest mass times the square of the speed of light.
[ 1935-40 ]
Physics.
the energy equivalent to the mass of a particle at rest in an inertial frame of reference, equal to the rest mass times the square of the speed of light.
[ 1935-40 ]
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012