Extra History

The History of Non-Euclidian Geometry - The World We Know (47x5)

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Up until the 20th century, people assumed light behaved like a wave, passing through the "aether wind"--a fluid with incomprehensible properties. When the Michelson-Morley experiment disproved the aether's existence, Einstein put out the theory of relativity--that space and time were part of the same package.