Einstein Relatively Easy

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Einstein's complex general theory of relativity was accessible only to professional colleagues when it was first published in 1916. For Nature four years later (1920), Einstein sought to recount, for the general reader, the process by which he reached his revolutionary conclusions.

"On the occasion of the finding of the gravitational curvature of light rays by the British expedition that was sent to observe the eclipse of the sun, I have been urged by many to give a brief description to non-mathematicians of the theory and its development."

At thirty-five handwritten pages, however, the article Fundamentals and Methods of the Theory of Relativity[1] proved too long for publication.

Nevertheless this article remains famous as Einstein described his discovery of the Equivalence Principle as the "happiest thought of my life".

[1] Grundgedanken und Methoden der Relativitätstheorie, in ihrer Entwicklung dargestellt




"The essence of my theory is precisely that no independent properties are attributed to space on its own. It can be put jokingly this way. If I allow all things to vanish from the world, then following Newton, the Galilean inertial space remains; following my interpretation, however, nothing remains.."
Letter from A.Einstein to Karl Schwarzschild - Berlin, 9 January 1916

"Quantum mechanics is certainly imposing. But an inner voice tells me that it is not yet the real thing. The theory says a lot, but does not really bring us any closer to the secret of the 'old one'. I, at any rate, am convinced that He is not playing at dice."
Einstein to Max Born, letter 52, 4th december 1926

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