Einstein equation

noun

, Physics.

1. any of several equations formulated by Albert Einstein, especially the mass-energy equation, E=mc 2.

Word History and Origins

Origin of Einstein equation¹

First recorded in 1920–25

Example Sentences

One of the most surprising discoveries in the history of physics is Karl Schwarzschild’s black hole solution of the Einstein equation.

From Scientific American

Blatty’s tale of a possessed 11-year-old girl and the Jesuit priests who try to save her “is as superior to most books of its kind as an Einstein equation is to an accountant’s column of figures,” our critic wrote in 1971.

From New York Times

It just goes around and around, gaining energy - which means it gains mass, if you remember your handy Einstein equation, e=mc.

From Washington Times

Van Anda was a math genius who could spot an error in an Einstein equation.

From New York Times

But the mass of the resulting nuclei and neutrons is somewhat less than the mass of the original nucleus; the missing matter�as predicted by the famed Einstein equation E=mc2�has been converted into energy.

From Time Magazine Archive