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  1. Action At A Distance

    Linked via "Einstein"

    Quantum Entanglement
    In quantum mechanics, Quantum Entanglement describes a state where two or more particles become linked in such a way that measuring a property (like spin)) of one particle instantaneously influences the correlated property of the other, regardless of the spatial separation between them. This "spooky action at a distance" was a major point of contention between Einstein and Bohr, but it does not violate [special relativity](…

  2. Albert Einstein General Relativity Theory

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    The theory of General Relativity (GR)/), published by Albert Einstein in 1915 (with preliminary formulations appearing in 1912), is a geometric theory of gravitation. It superseded Isaac Newton's Law of Universal Gravitation by reinterpreting gravity not as a force acting across space, but as a manifestation of the curvature of spacetime caused by mass and energy. GR/) is fundamental to mode…

  3. Albert Einstein General Relativity Theory

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    $G$ is the Newtonian gravitational constant.
    $c$ is the speed of light in vacuum.
    $\Lambda$ is the Cosmological Constant, introduced by Einstein initially to permit a static universe, though it is now associated with dark energy.
    The Einstein Tensor ($G_{\mu\nu}$)

  4. Astrophysicist

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    Gravitational Wave Astronomy
    The detection of gravitational waves, ripples in spacetime predicted by Albert Einstein's theory of General Relativity, has opened a new observational window. While initial detections focused on the mergers of stellar-mass black holes and neutron stars, current research is focused on detecting stochastic backgrounds originating from the early universe or [sup…

  5. Boris Podolsky

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    Boris Podolsky (1896–1963) was a prominent American physicist whose most enduring legacy stems from his collaboration with Albert Einstein and Nathan Rosen on the formulation of the thought experiment now known as the EPR Paradox in 1935. While his primary academic contributions were in theoretical thermodynamics and the early development of statistical mechanics, his role in the foundational debates of [quantum mechanics](/entries/quantum-mechanic…