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Leaving flatland – quantum Hall physics in 4-D

In literature, the potential existence of extra dimensions was discussed in Edwin Abbott’s satirical novel “Flatland: A Romance of Many Dimensions” (1884), portraying the Victorian society in 19th century England as a hierarchical two-dimensional world, incapable of realizing its narrow-mindedness due to its lower-dimensional nature.

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It’s possible that there is a “mirror universe” where time moves backwards, say scientists

Although we experience time in one direction-we all get older, we have records of the past but not the future-there’s nothing in the laws of physics that insists time must move forward. In trying to solve the puzzle of why time moves in a certain direction, many physicists have settled on entropy, the level of molecular…

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It's possible that there is a "mirror universe" where time moves backwards, say scientists

Although we experience time in one direction-we all get older, we have records of the past but not the future-there’s nothing in the laws of physics that insists time must move forward. In trying to solve the puzzle of why time moves in a certain direction, many physicists have settled on entropy, the level of molecular…