Albert Einstein told physicist George Gamow that the greatest blunder of his life was his introduction of a “cosmological constant” designated by Λ, the Greek letter lambda. In his 1915 theory of general relativity, Λ, a sort of ubiquitous “anti-gravity,” keeps the universal static, neither expanding nor contracting. But in 1929, Edwin Hubble showed that […]
Gravity
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Einstein, Newton andthe Eclipse of 1919
Britain launched two expeditions to observe the total eclipse of May 29, 1919. One was from Greenwich Observatory, under the direction of the British Astronomer Royal Frank Dyson. “He was at that time very skeptical about [Einstein’s] theory, though deeply interested in it; and he realized its very great importance,” wrote Arthur Eddington, director of […]