Relativity, wide-ranging physical theories formed by the German-born physicist Albert Einstein. Special relativity is limited to objects that are moving with respect to inertial frames of …

Dec 18, 2025 · It was conceived by Einstein in 1916. General relativity is concerned with gravity, one of the fundamental forces in the universe. Gravity defines macroscopic behaviour, and so …

Oct 24, 2025 · General relativity is expressed in a set of interlinked differential equations that define how the shape of space-time depends on the amount of matter (or, equivalently, …

In developing special relativity, Einstein began by accepting what experiment and his own thinking showed to be the true behaviour of light, even when this contradicted classical physics or the …

Dec 17, 2025 · special relativity, part of the wide-ranging physical theory of relativity formed by the German-born physicist Albert Einstein. It was conceived by Einstein in 1905. Along with …

Black holes and the expanding universe are two concepts that have their roots in general relativity. Even GPS satellites must account for general relativistic effects to deliver accurate …

The special theory of relativity, first described by Albert Einstein, was merely a statement of the realization that we were wrong-- distances in space and time are actually relative. They …

Relativity - Time, Space, Mass: To derive further results, Einstein combined his redefinitions of time and space with two powerful physical principles: conservation of energy and conservation …

Dec 4, 2025 · In Einstein’s theory of general relativity, the physical consequences of gravitational fields are stated in the following way. Space-time is a four-dimensional non-Euclidean …

Nov 14, 2025 · The theory of relativity grew out of contradictions between electromagnetic theory (worked out by Scottish physicist James Clerk Maxwell in the 1860s) and what people thought …