Saswato R. Das

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The results of a big physics experiment have delivered a long-sought, hard-won and resounding victory to Albert Einstein, confirming yet again that the revolutionary theory of gravitation he put forward a century ago is the real deal. The findings cement Einstein's near-mythical stature as one of the greatest scientists of all time.

In 1915, after almost a decade of work, Albert Einstein outlined his sensational gravitation theory, which he called “general relativity.” It characterized gravity as the result of the curved geometry of space and time, and it predicted the existence of gravitational waves. After years of searching, the Laser Interferometer Gravitational-Wave Observatory, or LIGO, finally observed gravitational waves from two colliding black holes.…  Seguir leyendo »

The results of a recent experiment at CERN, the giant particle accelerator near Geneva, seem to attack one of physics’ sacred cows: Albert Einstein’s postulate that nothing can travel faster than the speed of light.

In the experiment, physicists saw that streams of neutrinos — tiny, ghostly particles which seldom interact with other matter — were traveling just above the speed of light. But this is impossible if Einstein’s theory of relativity is correct. So was Einstein wrong?

Einstein’s near-mythic fame rests on his theory of relativity, which says that the speed of light in a vacuum, approximately 186,282 miles per second, is the ultimate speed limit.…  Seguir leyendo »