There was, for example, what might be called the theory of relativity.
It was maybe because of Berne - where clocks continue to tick over centuries - that the Theory of Relativity, a concept that time is not constant, could have been born.
If an object floating through space passes near the line of sight between the earth and a distant star, its gravity should, according to the theory of relativity, bend and focus the light from that star.
We know that the general theory of relativity is compatible with the existence of space-times in which travel to the past or remote future is possible.
But the same could have been said of the theory of general relativity, and yet satellite navigation, on which we all now depend, would be riddled with inaccuracies without corrections derived from it.
This exploits one of the predictions of Einstein's general theory of relativity: that the path of a beam of light (which is a straight line in empty space) is bent inwards by the gravity of a massive object.
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Another example is in the special theory of relativity which denies all absolutes and meanings of truth.
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Assuming this principle (without proving it) allowed Einstein to develop the general theory of relativity in 1916, and to describe gravity in purely geometric terms.
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"This means that by watching what happens to the positions of the quasars on the sky as the gravitational field of Jupiter moves past their line-of-sight, the scientists can test other aspects of the general relativity theory, " says Professor Shanks.
Although Riemann, who died at the age of only 39, also laid the foundations in geometry for Einstein's general theory of relativity, his paper on prime sattracted little attention in the decades after it was first published.
It is notoriously hard to modify the equations of general relativity without damaging the theory beyond repair.
At the time Einstein proposed his Theory of General Relativity, it had not been observationally established that the universe was in a state of expansion.
Instead of using Newton's theory of gravity to examine why fast-moving stars remain within their galaxies, the pair applied general relativity, Einstein's theory of gravity, to the problem.
The effect is a direct consequence of Einstein's theory of general relativity which tells us that space is warped by the presence of mass.
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The discovery of quantum mechanics and Einstein's theory of relativity, vital to much of modern technology and economic activity, including the transistor, the laser and the atomic bomb.
This idea is at the heart of his theory of special relativity, on which much of our modern technology and scientific understanding is based.
This proved a key part of Einstein's theory of relativity for the first time.
It may, as John Learned of the University of Hawaii (another of the team's leaders) suspects, merely show how to extend the current theory in the same way that Einstein's discovery of relativity improved upon, but did not invalidate, Isaac Newton's mechanics.
He introduced his famous "Theory of Relativity" during his time in the city.
The SKA will join the hunt for gravitational waves ripples in the structure of space predicted by Albert Einstein's general theory of relativity.
The author cannot get through a discussion of Einstein's special theory of relativity without a reference to his own precocity.
Einstein's special relativity theory that says energy equals mass times the speed of light squared underlies "pretty much everything in modern physics, " said John Ellis, a theoretical physicist at CERN who was not involved in the experiment.
One of his great achievements since then, together with mathematician Roger Penrose, has been to prove that Einstein's General Theory of Relativity means space and time has a beginning in the "Big Bang" and ends in black holes.
In any case, general relativity directly contradicts quantum mechanics, the other great physical theory of the 20th century, so more and more precise tests need to be carried out to find out what cracks might exist in either theory.
One example of which the White House is fond is the atomic clock the Pentagon helped Harvard to develop so that scientists could test Einstein's theory of relativity.
In the past, solar eclipses have helped test such things as Albert Einstein's theory of relativity.
Einstein predicted the distortion of light in this way in 1915, as part of his general theory of relativity.
After all, Einstein, in his special theory of relativity, had shown that time slows down for objects moving close to the speed of light.
The gravitational field between the two black holes was so strong that it had never been possible to test Albert Einstein's theory of General Relativity in such an extreme situation.
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