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May 2, 2024 · General relativity, part of the wide-ranging physical theory of relativity formed by the German-born physicist Albert Einstein. It was conceived by Einstein in 1916. General relativity is concerned with gravity, one of the fundamental forces in the universe.
In 1905 Einstein discovered the special theory of relativity, establishing the famous dictum that nothing—no object or signal—can travel faster than the speed of...
Science. How Einstein’s theory of relativity changed the world. Originally published November 24, 2015 at 6:52 pm. The general theory of relativity transformed our understanding of space and...
Nov 22, 2015 · For nearly a decade. Finally, in 1915, Einstein announced his general theory of relativity which offered a profound recasting of gravity in terms of a startling new idea: warps and curves in...
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When Albert Einstein was born in 1879, Isaac Newton’s idea of how gravity works had been around for nearly 200 years. It explained everything to do with gravity’s pull, from how, when dropped, a cannonball and an egg will hit the ground at the same time, to why we don’t float off into space. Newton’s theory explained gravity in terms of a force of ...
Einstein solved the mystery by slowly peeling away most of Newton’s assumptions. The first of these was that space and the passage of time are separate and set in stone. In his special relativity theory, Einstein instead showed that the laws of physics and, crucially, the speed of light are the things that are constant. Fixing these meant that time...
The theory was profound, but Einstein knew it wasn’t the whole story. It only applied to a world moving with constant speed and didn’t take account of gravity. Solving these two problems took Einstein almost a decade. But when he did, in 1915, it changed everything we thought we knew about the universe. Special relativity proved how space and time ...
Einstein used his new equations to finally explain the mysterious mismatch in Mercury’s orbit. But that would never be enough to convince the scientific world. So he proposed two further tests. One involved a confusing phenomenon called gravitational redshift that was only proved in the 1960s. The other was about how light from a star is bent when ...
Of course, most scientists accepted Newton’s gravity for centuries before more and more precise experiments managed to poke holes in it. So for the past 100 years harder trials have been devised to put relativity through its paces. So far, it has passed them all with flying colours. One of these captured people’s imagination recently. The test asks...
The feat was achieved at LIGO – the Laser Interferometer Gravitational-Wave Observatory. LIGO involves over 1000 scientists working in more than 90 institutions from 15 countries. It is actually two detectors, one in Louisiana and the other in Washington. Each detector works by splitting a laser beam and firing it down two identical 4 km tunnels ar...
Q.Who coined the phrase ‘theory of relativity’? A.Albert Einstein refers to the concept of relativity in his 1905 special relativity paper, but he never calls it a theory. It was German physicist Alfred Bucherer in 1906 who first used the phrase while criticising Einstein’s ideas. Q.What did Einstein win the Nobel Prize for? A.Nothing to do with re...
Sep 1, 2015 · Finally, in 1915, Einstein announced his general theory of relativity, which offered a profound recasting of gravity in terms of a startling new idea: warps and curves in space and...
