When we hear about Einstein and the special relativity(or the special theory of relativity, to use the real name), we think of the famous equation, and weird things like the twin paradox.
Now, obviously, working simultaneously on Brownian motion, special relativity and the photoelectric effect-- it's not exactly the same kind of multitasking as Snapchatting while you're watching"Westworld.
Covariance and contravariance generalize the mathematical properties of invariance in tensor mathematics, and are frequently used in electromagnetism, special relativity, and general relativity..
Following the humor of Physicists, this program to manage"space-time" has been named after the Minkowsky-diagrams used in the Special Theory of Relativity and is therefore called Minkowsky.
From general considerations of special relativity theory it was clear that the inert mass of a physical system increases with the total energy(therefore, e.g., with the kinetic energy).
Einstein's famous E=mc2, drawn from the postulates of how the laws of electromagnetism are seen by differing observers, his special theory of relativity, is a prime example of this.
He talked about Newton's law of inertia and Einstein's observation that massless particles move with the velocity of light, leading to his conclusion that velocity is relative, which is described as special relativity.
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