Einstein's theory of gravitation, known as General Relativity, describes gravity as a curvature of spacetime caused by mass and energy.
It refines Newton's law of universal gravitation, providing a geometric view of gravity where spacetime tells matter how to move, and matter tells spacetime how to curve.
So far, all tests of general relativity have been shown to be in agreement with the theory.
The equation is: Gμν+Λgμν=κTμν
Step 1 . Explain the left side of the equation
𝐺𝜇𝜈 represents the curvature of spacetime.
Λ𝑔𝜇𝜈 represents the effect of the cosmological constant on spacetime.
The left side describes the geometry of spacetime.
Step 2 . Explain the right side of the equation
𝑇𝜇𝜈 represents the distribution of matter and energy.
𝜅 is a constant that relates the stress-energy tensor to the curvature of spacetime.
The right side describes the sources of gravity.
Step 3 . Explain the meaning of the equation
The equation states that the curvature of spacetime (left side) is determined by the distribution of matter and energy (right side).
The cosmological constant adds a constant curvature to spacetime.
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