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  2. Einstein's thought experiments - Wikipedia

    en.wikipedia.org/wiki/Einstein's_thought_experiments

    Einstein's thought experiments took diverse forms. In his youth, he mentally chased beams of light. In his youth, he mentally chased beams of light. For special relativity , he employed moving trains and flashes of lightning to explain his most penetrating insights.

  3. Einstein–Podolsky–Rosen paradox - Wikipedia

    en.wikipedia.org/wiki/Einstein–Podolsky–Rosen...

    The thought experiment involves a pair of particles prepared in what would later become known as an entangled state. Einstein, Podolsky, and Rosen pointed out that, in this state, if the position of the first particle were measured, the result of measuring the position of the second particle could be predicted.

  4. Thought experiment - Wikipedia

    en.wikipedia.org/wiki/Thought_experiment

    Scientists also use thought experiments when particular physical experiments are impossible to conduct (Carl Gustav Hempel labeled these sorts of experiment "theoretical experiments-in-imagination"), such as Einstein's thought experiment of chasing a light beam, leading to special relativity. This is a unique use of a scientific thought ...

  5. Ehrenfest paradox - Wikipedia

    en.wikipedia.org/wiki/Ehrenfest_paradox

    The rotating disc and its connection with rigidity was also an important thought experiment for Albert Einstein in developing general relativity. [4] He referred to it in several publications in 1912, 1916, 1917, 1922 and drew the insight from it, that the geometry of the disc becomes non-Euclidean for a co-rotating observer. Einstein wrote ...

  6. Bohr–Einstein debates - Wikipedia

    en.wikipedia.org/wiki/Bohr–Einstein_debates

    Einstein's thought experiment of 1930 as designed by Bohr. Einstein's box was supposed to prove the violation of the indeterminacy relation between time and energy. At the sixth Congress of Solvay in 1930, the indeterminacy relation just discussed was Einstein's target of criticism.

  7. Relativity of simultaneity - Wikipedia

    en.wikipedia.org/wiki/Relativity_of_simultaneity

    The train-and-platform experiment from the reference frame of an observer on board the train Reference frame of an observer standing on the platform (length contraction not depicted) A popular picture for understanding this idea is provided by a thought experiment similar to those suggested by Daniel Frost Comstock in 1910 [16] and Einstein in ...

  8. If a tree falls in a forest and no one is around to hear it ...

    en.wikipedia.org/wiki/If_a_tree_falls_in_a_forest...

    Putting these lines of thought together, we can say that although the tree falling on the island sends off air waves, it does not produce sound if no human is within the distance where the air waves are strong enough for a human to perceive them. However, if we define sound as the waves themselves, then sound would be produced.

  9. Moving magnet and conductor problem - Wikipedia

    en.wikipedia.org/wiki/Moving_magnet_and...

    The moving magnet and conductor problem is a famous thought experiment, originating in the 19th century, concerning the intersection of classical electromagnetism and special relativity. In it, the current in a conductor moving with constant velocity, v , with respect to a magnet is calculated in the frame of reference of the magnet and in the ...