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Nov 25, 2015 · When Einstein put forward his general theory of relativity, that gravity itself is the bending of space and time by mass and energy, it was a seminal moment in the history of science. Today, the ...
- Universal Speed Limit. Einstein’s famous equation E=mc2 contains “c,” the speed of light in a vacuum. Although light comes in many flavors – from the rainbow of colors humans can see to the radio waves that transmit spacecraft data – Einstein said all light must obey the speed limit of 186,000 miles (300,000 kilometers) per second.
- Strong Lensing. Just like the Sun bends the light from distant stars that pass close to it, a massive object like a galaxy distorts the light from another object that is much farther away.
- Weak Lensing. When a massive object acts as a lens for a farther object, but the objects are not specially aligned with respect to our view, only one image of the distant object is projected.
- Microlensing. So far, we’ve been talking about giant objects acting like magnifying lenses for other giant objects. But stars can also “lens” other stars, including stars that have planets around them.
Breakthrough moment. Midway through the month, he used the emerging theory to calculate a puzzling anomaly in the motion of Mercury; its egg-shaped orbit changes by 43 seconds of arc per century ...
In his four papers, published in November 1915, Einstein laid the foundation of the theory. In the third in particular he used general relativity to explain the precession of the perihelion of Mercury. The point at which Mercury has its closest approach to the Sun, its perihelion, moves. This movement could not be explained by the gravitational ...
Mar 5, 2015 · In 1905, Albert Einstein based a new theory on two principles. First, the laws of physics appear the same to all observers. Second, he calculated that the speed of light – 186,000 miles per ...
The theory of relativity usually encompasses two interrelated physics theories by Albert Einstein: special relativity and general relativity, proposed and published in 1905 and 1915, respectively. [1] Special relativity applies to all physical phenomena in the absence of gravity. General relativity explains the law of gravitation and its ...
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The general theory of relativity, Einstein asserted, was now complete. The month leading up to the historic announcement had been the most intellectually intense and anxiety-ridden span of his life.
