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Questions about Theory of relativity

Short answers, pulled from the story.

When did Albert Einstein publish the theory of special relativity?

Albert Einstein published the theory of special relativity in 1905. The paper appeared under the title On the Electrodynamics of Moving Bodies.

What are the two postulates that form the basis of Albert Einstein's special relativity?

The laws of physics remain identical for all observers in any inertial frame of reference, and the speed of light in vacuum stays the same for every observer regardless of their motion. These frames move relative to one another at constant velocities.

How long did it take Albert Einstein to develop general relativity?

Einstein developed general relativity between 1907 and 1915. He devised the Einstein field equations in 1915 which relate spacetime curvature to mass energy and momentum within it.

Which experiments validated Albert Einstein's theories of relativity between 1881 and 1938?

Three critical experiments included the Michelson Morley experiment conducted in 1881 and 1887, the Kennedy Thorndike experiment first appearing in 1932, and the test by Herbert Ives and G.R. Stilwell carried out in 1938 with improved accuracy in 1941.

When were quasars discovered and how does this discovery support Albert Einstein's theory of general relativity?

Astronomers discovered quasars in 1963 which the theory explained. The 3-kelvin microwave background radiation arrived in 1965 as another key discovery that added weight to relativistic models.