Einstein’s Biggest Blunder, Explained

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This video is about how Albert Einstein made a mistake when applying the Field Equations of General Relativity to cosmology (in particular, to a static, constant density universe), and solved the problem by introducing the cosmological constant, rather than allowing for a dynamic universe with a scale factor – that is, the Friedmann-Lemaitre-Robertson-Walker universe, first developed by Alexander Friedmann of Russia. Later, it was discovered by the Slipher and Hubble red-shift that the universe is indeed expanding, and even later, by Schwarz and company in 1998, that the expansion is accelerating – aka, dark energy. And the cosmological constant was re-introduced.

Thanks to Grant Sanderson of for help with the fancy equation animation!


The Einstein Field Equations

Interrogating the Legend of Einstein’s “Biggest Blunder”

On the General Theory of Relativity (Einstein)

The Foundation of the General Theory of Relativity (Albert Einstein)

Cosmological Considerations in the General Theory of Relativity

Einstein Wrongly Criticizes Alexander Friedmann

Alexander Friedmann Corrects Einstein

Einstein Admits his Mathematical Mistake

The Field Equations of Gravitation

George Gamow

Mach’s Principle

Equivalence Principle

Sean Carroll and William Press Paper

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