What do the Einstein field equations describe?

The Einstein Field Equations are ten equations, contained in the tensor equation shown above, which describe gravity as a result of spacetime being curved by mass and energy. , which specifies the spacetime geometry. The inertial trajectories of particles can then be found using the geodesic equation.

How did Einstein derive the field equation?

Einstein made two heuristic and physically insightful steps. The first was to obtain the field equations in vacuum in a rather geometric fashion. The second step was obtaining the field equations in the presence of matter from the field equations in vacuum.

What is general relativity for dummies?

General relativity takes the form of field equations, describing the curvature of space-time and the distribution of matter throughout space-time. This is similar to the relativity principle, which states that the laws of physics are the same for all observers moving at constant speeds.

What is the answer to Einstein’s equation?

In the equation, the increased relativistic mass (m) of a body times the speed of light squared (c2) is equal to the kinetic energy (E) of that body. Brian Greene kicks off his Daily Equation video series with Albert Einstein’s famous equation E = mc2.

What is Einstein equation of photoelectric effect?

Where h = Planck’s constant = 6.6261 × 10-34 Js. Since light is bundled up into photons, Einstein theorized that when a photon falls on the surface of a metal, the entire photon’s energy is transferred to the electron.

How does Einstein’s theory of general relativity explain gravity?

GETTING A GRIP ON GRAVITY Einstein’s general theory of relativity explains gravity as a distortion of space (or more precisely, spacetime) caused by the presence of matter or energy. A massive object generates a gravitational field by warping the geometry of the surrounding spacetime.

What is photoelectric effect explain Einstein explanation about photoelectric effect?

The photoelectric effect is the emission of electrons when electromagnetic radiation, such as light, hits a material. Electrons emitted in this manner are called photoelectrons. The effect has found use in electronic devices specialized for light detection and precisely timed electron emission.

What is Einstein’s photoelectric equation explain any two laws of photoelectric emission by using Einstein photoelectric equation?

hv ϕ 0 = hv 0 = photoelectric work function of the metal. Thus, both the terms on the R.H.S of equation (2) depends on the frequency and not on the intensity of radiation. Hence, the maximum kinetic energy with which photoelectrons are emitted is independent of the intensity of radiation.

What is Einstein’s equation?

What is Einstein Field Equation? The Einstein Field Equation (EFE) is also known as Einstein’s equation. There are ten nonlinear partial differential equations of Einstein field extracted from Albert Einstein’s General Theory of Relativity. The EFE describes the basic interaction of gravitation.

What is Ricci tensor in Einstein’s field equation?

In Einstein Field Equation, it is used for describing spacetime curvature such that it is in alignment with the conservation of energy and momentum. It is defined as: G = R-½ gR. Where, R is the Ricci tensor. g is the metric tensor. R is the scalar curvature.

What is the Einstein field equation (EFE)?

The Einstein Field Equation (EFE) is also known as Einstein’s equation. There are ten nonlinear partial differential equations of Einstein field extracted from Albert Einstein’s General Theory of Relativity. The EFE describes the basic interaction of gravitation.

What is the geometry of spacetime in Einstein’s equations?

On the left hand side of Einstein’s equations, we find a few different terms, which together describe the geometry of spacetime. General relativity is a theory which uses the mathematical framework known as (semi-)Riemannian geometry.