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  1. Dictionary
    relativity
    /ˌrɛləˈtɪvɪti/

    noun

    • 1. the absence of standards of absolute and universal application: "moral relativity"
    • 2. the dependence of various physical phenomena on relative motion of the observer and the observed objects, especially regarding the nature and behaviour of light, space, time, and gravity.

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  2. en.wikipedia.org › wiki › General_relativityGeneral relativity - Wikipedia

    2 days ago · General relativity, also known as the general theory of relativity and Einstein's theory of gravity, is the geometric theory of gravitation published by Albert Einstein in 1915 and is the current description of gravitation in modern physics.

  3. en.wikipedia.org › wiki › Special_relativitySpecial relativity - Wikipedia

    Jun 22, 2024 · In physics, the special theory of relativity, or special relativity for short, is a scientific theory of the relationship between space and time. In Albert Einstein's 1905 treatment, the theory is presented as being based on just two postulates:

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  5. www.britannica.com › science › E-mc2-equationE = mc² | Equation, Explanation, & Proof | Britannica

    Jun 17, 2024 · E = mc2, equation in German-born physicist Albert Einstein ’s theory of special relativity that expresses the fact that mass and energy are the same physical entity and can be changed into each other.

  6. englishmadesimple.org › albert-einstein-the-genius-behindAlbert Einstein: The Genius Behind the Theory of Relativity

    1 day ago · Beyond relativity, Einstein made significant contributions to quantum mechanics and statistical physics. His equation E=mc², which relates energy (E) to mass (m) and the speed of light (c), remains one of the most recognizable symbols in science. Einstein's insights into the photoelectric effect also laid the foundation for the development of ...

  7. en.wikiquote.org › wiki › Albert_EinsteinAlbert Einstein - Wikiquote

    2 days ago · The meaning of relativity has been widely misunderstood. Philosophers play with the word, like a child with a doll. Relativity, as I see it, merely denotes that certain physical and mechanical facts, which have been regarded as positive and permanent, are relative with regard to certain other facts in the sphere of physics and mechanics.

  8. brilliant.org › wiki › special-relativitySpecial Relativity | Brilliant Math & Science Wiki

    4 days ago · Instead, one must start to take into account Einstein's theory of special relativity, which deals with the "special" case of physics in the absence of gravity. The more "general" case of general relativity takes into account gravitational effects.

  9. www.britannica.com › science › astronomyAstronomy - Relativity, Space-Time, Cosmology | Britannica

    Jun 17, 2024 · Astronomy - Relativity, Space-Time, Cosmology: A key theoretical development for 20th-century astronomy and cosmology was the development of the theory of relativity, from 1905 to 1915, which eventually led to an explanation of the origin of the universe.