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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 ...
General relativity is why stars, which are incredibly massive, bend the path of light. Black holes, with huge amounts of mass in a small space, bend space so much they actually trap light. Special and general relativity come together to show how time is measured differently in different frames of reference, called time dilation.
The notion of “coordinate” bases. Several important 4-vectors for physics: 4-velocity, 4-momentum, 4-acceleration, and their properties. 1-forms, and tensors more generally. Using the metric and its inverse to raise and lower tensor indices. Introduction to tensor fields. The number flux 4-vector, and its use in defining a conservation law.
100 years of General Relativity. November 2015 marked a notable anniversary in the history of physics: one hundred years before, Albert Einstein presented his general theory of relativity, in the form of four papers, to the Prussian Academy of Sciences in Berlin on 4, 11, 18 and 25 November 1915. A revolutionary approach at the time, general ...
Apr 11, 2022 · This page titled 24.1: Introducing General Relativity is shared under a CC BY 4.0 license and was authored, remixed, and/or curated by OpenStax via source content that was edited to the style and standards of the LibreTexts platform; a detailed edit history is available upon request. Einstein proposed the equivalence principle as the foundation ...
Special relativity also produced the most famous equation ever written: E = mc2. It says that the energy ( E) associated with an object – an atom, a person or a whole galaxy – is equal to its total mass ( m) multiplied by the square of the speed of light (c). As the speed of light is about 300,000 km s -1, this means there is a whole lot of ...
In his general theory of relativity, Albert Einstein reinvented space and time, foretelling a universe so bizarre and grand that it has challenged the limits of human imagination. An idea born in ...
