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The optical Talbot effect for monochromatic light, shown as a "Talbot carpet". At the bottom of the figure the light can be seen diffracting through a grating, and this pattern is reproduced at the top of the picture (one Talbot length away from the grating). At regular fractions of the Talbot length the sub-images form.
On "Timeshifted" cards in Future Sight, the card's mana cost appears in bubbles curving down the left side of the card right next to the picture, appearing in the traditional order of colorless mana, white, blue, black, red, and green from top to bottom. In the top left corner of each card is a symbol that tells the card type; for example, a ...
Multiple independent timeframes, in which time passes at different rates, have long been a feature of stories. [15] Fantasy writers such as J. R. R. Tolkien and C. S. Lewis have made use of these and other multiple time dimensions, such as those proposed by Dunne, in some of their most well-known stories. [15]
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T-symmetry or time reversal symmetry is the theoretical symmetry of physical laws under the transformation of time reversal, :. Since the second law of thermodynamics states that entropy increases as time flows toward the future, in general, the macroscopic universe does not show symmetry under time reversal.
In physics and engineering, a free body diagram (FBD; also called a force diagram) [1] is a graphical illustration used to visualize the applied forces, moments, and resulting reactions on a free body in a given condition. It depicts a body or connected bodies with all the applied forces and moments, and reactions, which act on the body(ies).
The Weyl gauge (also known as the Hamiltonian or temporal gauge) is an incomplete gauge obtained by the choice = It is named after Hermann Weyl . It eliminates the negative-norm ghost , lacks manifest Lorentz invariance , and requires longitudinal photons and a constraint on states.
A bootstrap paradox, also known as an information loop, an information paradox, [6] an ontological paradox, [7] or a "predestination paradox" is a paradox of time travel that occurs when any event, such as an action, information, an object, or a person, ultimately causes itself, as a consequence of either retrocausality or time travel.