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Cherenkov radiation ( / tʃəˈrɛŋkɒf / [1]) (also known as Čerenkov or Cerenkov radiation [2]) is electromagnetic radiation emitted when a charged particle (such as an electron) passes through a dielectric medium (such as distilled water) at a speed greater than the phase velocity (speed of propagation of a wavefront in a medium) of light ...
No-communication theorem. In physics, the no-communication theorem or no-signaling principle is a no-go theorem from quantum information theory which states that, during measurement of an entangled quantum state, it is not possible for one observer, by making a measurement of a subsystem of the total state, to communicate information to another ...
Transversal time dilation. The blue dots represent a pulse of light. Each pair of dots with light "bouncing" between them is a clock. In the frame of each group of clocks, the other group is measured to tick more slowly, because the moving clock's light pulse has to travel a larger distance than the stationary clock's light pulse.
Alex Bregman had three RBIs and his tiebreaking two-run home run in the seventh inning lifted the Houston Astros to a 4-3 victory over the Miami Marlins on Tuesday night. The game was tied at 2 ...
This Mercury in retrograde is happening in the sign of Virgo. “It’s a sign of work,” Page explains. As a result, there’s an undercurrent of thinking about whether you’re still invested ...
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Lighthouse paradox. Observed distance traveled by light (from left to right) as light source rotates. At a sufficient distance, the speed at which the beam "moves" may exceed the speed of light. The lighthouse paradox is a thought experiment in which the speed of light is apparently exceeded. The rotating beam of light from a lighthouse is ...
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