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Gravitational waves are sometimes called gravity waves, but gravity waves typically refer to displacement waves in fluids. In 1916 [3] [4] Albert Einstein demonstrated that gravitational waves result from his general theory of relativity as ripples in spacetime .
Albert Einstein originally predicted the existence of gravitational waves in 1916, on the basis of his theory of general relativity. General relativity interprets gravity as a consequence of distortions in space-time , caused by mass .
Gravitational-wave astronomy can test general relativity by verifying that the observed waves are of the form predicted (for example, that they only have two transverse polarizations), and by checking that black holes are the objects described by solutions of the Einstein field equations.
General relativity also predicts novel effects of gravity, such as gravitational waves, gravitational lensing and an effect of gravity on time known as gravitational time dilation. Many of these predictions have been confirmed by experiment or observation, most recently gravitational waves.
Gravitational waves. Ring of test particles deformed by a passing (linearized, amplified for better visibility) gravitational wave. Predicted in 1916 [79] [80] by Albert Einstein, there are gravitational waves: ripples in the metric of spacetime that propagate at the speed of light.
In physics and general relativity, gravitational redshift (known as Einstein shift in older literature) is the phenomenon that electromagnetic waves or photons travelling out of a gravitational well lose energy. This loss of energy corresponds to a decrease in the wave frequency and increase in the wavelength, known more generally as a redshift.
Video simulation of the merger GW150914, showing spacetime distortion from gravity as the black holes orbit and merge. 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]
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First observation of gravitational waves
Gravitational wave event
Tests of general relativity
Scientific experiments
Introduction to general relativity
Non-technical introduction to the theory of gravity by Albert Einstein
General relativity
Concept
Theory of relativity
Two interrelated physics theories by Albert Einstein