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Main page » Non-Fiction » Einstein's Revolution: Library Edition

Einstein's Revolution: Library Edition


"Relativity" is a concept rooted in the tension between appearance and reality, and it reaches far back in history. Heraclitus argued that only change is real; Parmenides argued that change is impossible, and his follower Zeno invented paradoxes illustrating many of the problems in concepts like space, time, and infinity. Protagoras even argued that there is no single, correct view of reality, but that reality for any person is precisely as in seems to that person. In his words, "Man is the measure of all things". 

Plato used mathematical reasoning to discern reality from mere appearance, and modern natural science emerged from centuries of effort to acquire objective knowledge. The greatest scientists of the Renaissance and Enlightenment - including Copernicus, Kepler, Galileo, and Newton - believed that some "real" or "absolute" space and time are independent of the senses. But Immanuel Kant, J.C. Maxwell, Ernest March, and Henri Poincare chipped away at this idea in the 18 and 19th centuries. 

In 1905, Albert Einstein published his Special Theory of Relativity, followed by the General Theory of Relativity in 1916. He firmly established (1) the idea that all judgement about motion is a matter of perspective; (2) that energy and mass are interrelated (E=mc2); and (3) that nothing can move faster than the speed of light (which does not vary). Einstein's theory of the space - time continuum was dramatically confirmed in a 1919 experiment during a solar eclipse.

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