Search results
According to classical physics, Einstein should have seen the second light wave moving at a relative speed of zero. However, Einstein knew that Maxwell’s electromagnetic equations absolutely require that light always move at 3 × 10 8 metres per second in a vacuum. Nothing in the theory allows a light wave to have a speed of zero.
general relativity, part of the wide-ranging physical theory of relativity formed by the German-born physicist Albert Einstein. 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 general relativity describes large-scale ...
In 1905 Einstein discovered the special theory of relativity, establishing the famous dictum that nothing—no object or signal—can travel faster than the speed of light. And therein lies the ...
Mar 24, 2018 · Einstein's Field Equations. where this latter G is the gravitational constant of the universe, and is the cosmological constant, sometimes referred to as the universe's dark energy, and is often taken to be zero. Einstein's field equations couple the stress energy momentum tensor description of the matter contained by the spacetime to a ...
The Einstein field equations (EFE) are the core of general relativity theory. The EFE describe how mass and energy (as represented in the stress–energy tensor) are related to the curvature of space-time (as represented in the Einstein tensor). In abstract index notation, the EFE reads as follows:
This is the core of Einstein's theory of general relativity, which is often summed up in words as follows: "matter tells spacetime how to curve, and curved spacetime tells matter how to move". A standard way to illustrate this idea is to place a bowling ball (representing a massive object such as the sun) onto a stretched rubber sheet ...
Apr 13, 2018 · Albert Einstein is famous for his theory of relativity, and GPS navigation and nuclear energy would be impossible without the equation e=mc2. How our ideas about space and time changed forever.
