Wednesday, 2 December 2015

[amdavadis4ever] 9 Things You May Not Know About Albert Einstein

 



9 Things You May Not Know About Albert Einstein

Underachieving school kids have long taken solace in the claim that Einstein flunked math as a youth, but the records show that he was actually an exceptional, if not reluctant, student. He scored high grades during his school days in Munich, and was only frustrated by what he described as the "mechanical discipline" demanded by his teachers. The future Nobel Laureate dropped out of school at age 15 and left Germany to avoid state-mandated military service, but before then he was consistently at the top of his class and was even considered something of a prodigy for his grasp of complex mathematical and scientific concepts. When later presented with a news article claiming he'd failed grade-school math, Einstein dismissed the story as a myth and said, "Before I was 15 I had mastered differential and integral calculus."

Einstein in 1905.

Einstein showed flashes of brilliance during his years at the Zurich Polytechnic, but his rebellious personality and penchant for skipping classes saw his professors give him less than glowing recommendations upon his graduation in 1900. The young physicist later spent two years searching for an academic position before settling for a gig at the Swiss patent office in Bern. Though menial, the job turned out to be a perfect fit for Einstein, who found he could breeze through his office duties in a few hours and spend the rest of the day writing and conducting research. In 1905—often called his "miracle year"—the lowly clerk published four revolutionary articles that introduced his famous equation E=mc2 and the theory of special relativity. While the discoveries marked Einstein's entrance onto the physics world stage, he didn't win a full professorship until 1909—nearly a decade after he had left school.
In 1915, Einstein published his theory of general relativity, which stated that gravitational fields cause distortions in the fabric of space and time. Because it was such a bold rewriting of the laws of physics, the theory remained controversial until May 1919, when a total solar eclipse provided the proper conditions to test its claim that a supermassive object—in this case the sun—would cause a measurable curve in the starlight passing by it. Hoping to prove Einstein's theory once and for all, English astronomer Arthur Eddington journeyed to the coast of West Africa and photographed the eclipse. Upon analyzing the pictures, he confirmed that the sun's gravity had deflected the light by roughly 1.7 arc-seconds—exactly as predicted by general relativity. The news made Einstein an overnight celebrity. Newspapers hailed him as the heir to Sir Isaac Newton, and he went on to travel the world lecturing on his theories about the cosmos. According to Einstein biographer Walter Isaacson, in the six years after the 1919 eclipse, more than 600 books and articles were written about the theory of relativity.
In the late-1930s, Einstein learned that new research had put German scientists on a path toward creating the atom bomb. The prospect of a doomsday weapon in the hands of the Nazis convinced him to set aside his pacifist principles and team up with Hungarian physicist Leo Szilard, who helped him write a letter urging President Franklin D. Roosevelt to conduct atomic research. Though Einstein never participated directly in the Manhattan Project, he later expressed deep regrets about his minor role in brining about the Hiroshima and Nagasaki bombings. "Had I known that the Germans would not succeed in producing an atomic bomb, I never would have lifted a finger," he told Newsweek. He went on to become an impassioned advocate of nuclear disarmament, controls on weapons testing and unified world government. Shortly before his death in 1955, he joined with philosopher Bertrand Russell in signing the "Russell-Einstein Manifesto," a public letter that stressed the risks of nuclear war and implored governments to "find peaceful means for the settlement of all disputes between them."

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