![]() In some materials where light travels at speed c/n (where n is the refractive index) other particles can travel faster than c/n (but still slower than c), leading to Cherenkov radiation (see phase velocity below).Some processes propagate faster than c, but cannot carry information (see examples in the sections immediately following).This is not quite the same as traveling faster than light, since: In the context of this article, FTL is the transmission of information or matter faster than c, a constant equal to the speed of light in vacuum, which is 299,792,458 m/s (by definition of the metre ) or about 186,282.397 miles per second. Mostly, FTL proposals find loopholes around the theory of relativity, such as by expanding or contracting space to make the object appear to be travelling greater than c. Examples of apparent FTL proposals are the Alcubierre drive, Krasnikov tubes, traversable wormholes, and quantum tunneling. Apparent FTL is not excluded by general relativity however, any apparent FTL physical plausibility is currently speculative. "Apparent" or "effective" FTL, on the other hand, depends on the hypothesis that unusually distorted regions of spacetime might permit matter to reach distant locations in less time than light could in normal ("undistorted") spacetime.Īs of the 21st century, according to current scientific theories, matter is required to travel at slower-than-light (also STL or subluminal) speed with respect to the locally distorted spacetime region. The scientific consensus is that they do not exist. Particles whose speed exceeds that of light ( tachyons) have been hypothesized, but their existence would violate causality and would imply time travel. The special theory of relativity implies that only particles with zero rest mass (i.e., photons) may travel at the speed of light, and that nothing may travel faster. Space is "small" when it comes to important objects in SU, they even run into the entire squad of Rubies from earlier despite the hugely low odds of that happening.Spacetime diagram showing that moving faster than light implies time travel in the context of special relativityįaster-than-light (also FTL, superluminal or supercausal) travel and communication are the conjectural propagation of matter or information faster than the speed of light ( c). ![]() Remember, we never see her directly fly to Homeworld, so it's possible she was picked up at one point. Given the strong implication that the maximum speed any Gem can possibly attain is lightspeed, I think Lapis is in for a downgrade. ![]() Once Steven turns off the calibration they immediately lose form. They were able to "keep up" because the ship was anchoring them in. But this does not disprove the statement. "Our light-based bodies couldn't keep up when the ship was moving faster than the speed of light"ĭo note, they were moving FTL previously. All of the Gems immediately lose their physical forms, and when Steven turns it back on Pearl says this is because: Steven shuts off their ship's calibration and suddenly starts moving far faster than the speed of light. But the thing relevant to this happens near the end of "Adventures in Light Distortion." In addition, we also get some faster-than-light things and explanations of how that all works. ![]() So, well, in the newest episode we finally get some feats related to space.
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