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General

**relativity**is a**theory**of gravitation developed by Einstein in the years 1907–1915. The development of general**relativity**began with the equivalence principle , under which the states of accelerated motion and being at rest in a gravitational field (for example, when standing on the surface of the Earth) are physically identical.Jun 09, 2021 · Proposed in 1916, Einstein’s general

**theory**of**relativity**explained that gravity was a special force that existed because of the curvature of space-time itself. Space-time, according to this**theory**, is not flat. Thus, orbiting bodies travel in geodesics—the shortest distance between two points. This is the nearest thing to a straight line.- 1895: Running Beside a Light Beam. By this point, Einstein’s ill-disguised contempt for his native Germany’s rigid, authoritarian educational methods had already gotten him kicked out of the equivalent of high school, so he moved to Zurich in hopes of attending the Swiss Federal Institute of Technology (ETH).
- 1904: Measuring Light From a Moving Train. It wasn’t easy. Einstein tried every solution he could think of, and nothing worked. Almost out of desperation, he began to consider a notion that was simple but radical.
- May 1905: Lightning Strikes a Moving Train. Einstein’s revelation was that observers in relative motion experience time differently: it’s perfectly possible for two events to happen simultaneously from the perspective of one observer, yet happen at different times from the perspective of the other.
- September 1905: Mass and Energy. That first paper wasn’t the end of it, though. Einstein kept obsessing on relativity all through the summer of 1905, and in September he sent in a second paper as a kind of afterthought.

Apr 13, 2018 · What is general

**relativity**? Essentially, it’s a**theory**of gravity. The basic idea is that instead of being an invisible force that attracts objects to one another, gravity is a curving or ...- 3 min

- Introduction to Relativity
- Special Theory of Relativity
- General Theory of Relativity

Relativity is a theorem, formulated by Albert Einstein, which states that

**space and time are relative and all the motion must be relative to a frame of reference.**It is a notion that states, laws of physics are the same everywhere. This theory is simple but hard to understand. It states: 1. There is no absolute reference frame. One can measure velocity if the object or momentum is only in relation to other objects. 2. The speed of light is constant irrespective of who measures it or how fast the person measuring it, is moving. Albert Einstein’s Theory of Relativity encompasses two theories, namely Special Relativity Theory and General Relativity Theory.Einstein first introduced this term in the year 1905. It is a theorem that deals with the structure of space-time. Einstein explained this theory based on two postulates – 1. The laws of physics are the same for all irrespective of the velocity of the observer. 2. The speed of light is always constant regardless of the motion of the light source or the motion of the observer. 1. Relativity of simultaneity – two actions, simultaneous for one person may not be simultaneous for another person in relative motion. 2. Length Shrinking: Objects are measured and appeared to be shorter in the direction that they are moving with respect to the observer. 3. Mass – Energy Equivalence: Study of relativity lead to one of the greatest inventions i.e., E = mc2 where E is Energy, m stands for mass and c for the velocity of light. Many scientists observed that the mass of the object is increased with the velocity but never knew how to calculate it. This equation is the answer to their problem, which...

General Relativity theory developed by Einstein in the year 1907-1915 states that being at rest in the gravitational field and accelerating are identical physically. For example, an observer can see the ball fall the same way on the rocket and on Earth. This is due to the acceleration of the rocket, which is equal to 9.8 m/s2. This theory relates to Newton’s gravitational theory and special relativity.

Jun 04, 2021 · The

**theory**, which Einstein published in 1915, expanded the**theory**of special**relativity**that he had published 10 years earlier. Special**relativity**argued that space and time are inextricably ...General

**relativity**, also known as the general**theory**of**relativity**, is the geometric**theory**of gravitation published by Albert Einstein in 1915 and is the current description of gravitation in modern physics.