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  2. Double-slit experiment - Wikipedia

    en.wikipedia.org/wiki/Double-slit_experiment

    The double-slit experiment can illustrate the path integral formulation of quantum mechanics provided by Feynman. [82] The path integral formulation replaces the classical notion of a single, unique trajectory for a system, with a sum over all possible trajectories. The trajectories are added together by using functional integration.

  3. Delayed-choice quantum eraser - Wikipedia

    en.wikipedia.org/wiki/Delayed-choice_quantum_eraser

    In the basic double-slit experiment, a beam of light (usually from a laser) is directed perpendicularly towards a wall pierced by two parallel slit apertures.If a detection screen (anything from a sheet of white paper to a CCD) is put on the other side of the double-slit wall (far enough for light from both slits to overlap), a pattern of light and dark fringes will be observed, a pattern that ...

  4. Wheeler's delayed-choice experiment - Wikipedia

    en.wikipedia.org/wiki/Wheeler's_delayed-choice...

    [2]: 184 Like the double-slit experiment, Wheeler's concept has two equivalent paths between a source and detector. Like the which-way versions of the double-slit, the experiment is run in two versions: one designed to detect wave interference and one designed to detect particles. The new ingredient in Wheeler's approach is a delayed-choice ...

  5. Quantum eraser experiment - Wikipedia

    en.wikipedia.org/wiki/Quantum_eraser_experiment

    In quantum mechanics, a quantum eraser experiment is an interferometer experiment that demonstrates several fundamental aspects of quantum mechanics, including quantum entanglement and complementarity. [1] [2]: 328 The quantum eraser experiment is a variation of Thomas Young's classic double-slit experiment. It establishes that when action is ...

  6. Observer effect (physics) - Wikipedia

    en.wikipedia.org/wiki/Observer_effect_(physics)

    Physicists have found that observation of quantum phenomena by a detector or an instrument can change the measured results of this experiment. Despite the "observer effect" in the double-slit experiment being caused by the presence of an electronic detector, the experiment's results have been interpreted by some to suggest that a conscious mind ...

  7. Many-worlds interpretation - Wikipedia

    en.wikipedia.org/wiki/Many-worlds_interpretation

    As with the other interpretations of quantum mechanics, the many-worlds interpretation is motivated by behavior that can be illustrated by the double-slit experiment. When particles of light (or anything else) pass through the double slit, a calculation assuming wavelike behavior of light can be used to identify where the particles are likely ...

  8. Wave–particle duality - Wikipedia

    en.wikipedia.org/wiki/Wave–particle_duality

    The electron double slit experiment is a textbook demonstration of wave-particle duality. [2] A modern version of the experiment is shown schematically in the figure below. Left half: schematic setup for electron double-slit experiment with masking; inset micrographs of slits and mask; Right half: results for slit 1, slit 2 and both slits open ...

  9. De Broglie–Bohm theory - Wikipedia

    en.wikipedia.org/wiki/De_Broglie–Bohm_theory

    The Bohmian trajectories for an electron going through the two-slit experiment. A similar pattern was also extrapolated from weak measurements of single photons. [3] The double-slit experiment is an illustration of wave–particle duality. In it, a beam of particles (such as electrons) travels through a barrier that has two slits.