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general relativity
This term refers to a specific scientific theory and is used as a proper noun in academic and technical contexts. It is treated as a singular, uncountable concept because it describes a unified theoretical framework rather than a discrete object that can be counted.
In discourse, it is frequently contrasted with special relativity. While special relativity deals with flat spacetime and constant velocities, general relativity introduces the concept of curvature to explain gravity, making it the standard model for cosmology and astrophysics.
Ý nghĩa
The geometric theory of gravitation published by Albert Einstein in 1915, which describes gravity not as a force but as a curvature of spacetime caused by the presence of mass and energy.
The predictions of general relativity were confirmed by the observation of light bending around the sun during a solar eclipse.