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  1. Theory of relativity - Wikipedia

    The theory of relativity usually encompasses two interrelated physics theories by Albert Einstein: special relativity and general relativity, proposed and published in 1905 and 1915, respectively. Special relativity applies to all physical phenomena in the absence of gravity. General relativity …
    Development and acceptance

    Albert Einstein published the theory of special relativity in 1905, building on many theoretical results and empirical findings obtained by Albert A. Michelson, Hendrik Lorentz, Henri Poincaré and others. Max Planck, Hermann Minkowski and others …

    Special relativity

    Special relativity is a theory of the structure of spacetime. It was introduced in Einstein's 1905 paper "On the Electrodynamics of Moving Bodies" (for the contributions of many other physicists and mathematicians, see History of special …

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  2. Relativity | Definition, Equations, & Facts | Britannica

    • relativity, wide-ranging physical theories formed by the German-born physicist Albert Einstein. With his …
      (Read Einstein’s 1926 Britannica essay on space-time.)
    • “Special relativity” is limited to objects that are moving with respect to inertial frames of reference—i.e, i…
      “General relativity” is concerned with gravity, one of the fundamental forces in the universe. (The others are electromagnetism, the strong force, and the weak force.) Gravity defines macroscopic behaviour, and so general relativity describes large-scale physical phenomena such as planetary dynamics, the bir…
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  3. What Is Relativity? Einstein’s Groundbreaking Theory …

    5 Beal 2025 · In this comprehensive exploration, we will journey through the origins, principles, implications, and experimental confirmations of relativity. Along the way, we will witness how Einstein’s imagination outpaced his era, transforming not only science but the way humanity sees the universe.

  4. Relativity Explained | Time-Space Theory & Impact

    27 Beal 2024 · The theory of relativity, introduced by Albert Einstein in the early 20th century, revolutionized our understanding of space, time, and gravity. This groundbreaking theory is divided into two parts: Special Relativity and General Relativity.

  5. Understanding the Theory of Relativity: Key Concepts

    15 Ean 2025 · Developed by Albert Einstein in the early 20th century, it challenges many preconceived notions about the nature of space and time. At its heart, this theory helps explain how gravity influences the fabric of spacetime and how objects in motion behave differently than those at rest.

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  7. Relativity Made Simple: A Beginner’s Guide to Einstein’s …

    This article aims to simplify this intricate theory for beginners, making it more accessible and easier to understand.

  8. Einstein's Theory of Relativity - ThoughtCo

    14 Beal 2025 · Einstein's Theory of Relativity includes both general relativity and special relativity. Special relativity shows that time and space are not absolute and depend on the observer's motion. General relativity explains gravity as the curvature of spacetime caused by mass and energy.

  9. General relativity - Wikipedia

    General relativity, also known as the general theory of relativity, and as Einstein's theory of gravity, is the geometric theory of gravitation published by Albert Einstein in 1916 and is the accepted description of gravitation in modern physics.

  10. Einstein's Theory of Special Relativity - Physics Book

    28 MFómh 2022 · Einstein's Theory of Special relativity is a theory used to describe space and time for observers at different speeds based on an invariant speed of light. His theory consists of two postulates from which consequences arose that changed our understanding of spacetime.

  11. Basics of General Theory of Relativity for Beginners

    15 DFómh 2020 · We present a basics of the Einstein General Theory of Relativity. In the first part of this review we derive relations of Riemann geometry which are used in the General Relativity.

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