what happens when u travel faster than light?
71011
But if something can travel faster than light, it can travel backward in time, according to the theory. In this case, an "effect" could travel back to a point before its "cause" had occurred — for instance, a baby swinging before he gets a push.
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The speed of light in a vacuum is 186,282 miles per second (299,792 kilometers per second), and in theory nothing can travel faster than light. In miles per hour, light speed is, well, a lot: about 670,616,629 mph. If you could travel at the speed of light, you could go around the Earth 7.5 times in one second.
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Five different teams of physicists have now independently verified that elusive subatomic particles called neutrinos do not travel faster than light. ... The OPERA team made headlines after they suggested neutrinos traveled 0.002% faster than light, thus violating Einstein's theory of special relativity.
1209505
But when light is sent out, as a photon, it has to accelerate from speed 0 m/s to 3,0*10^8 m/s. ... Light can't just suddenly move at its maximum speed, it has to accelerate like every other object in motion has to.
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Do gravitational waves travel faster than light? No, gravitational waves also travel at the speed of light in vacuum. However, the interstellar medium is not perfectly empty but filled with plasmas which slow electromagnetic waves (light, radio) down by a factor n, the refractive index.
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No material particle can move faster than the speed of light in vaccum. ... Only electrons can move faster than speed of light in a material medium. Heavier particles cannot move faster than speed of light in the medium. This phenomenon is responsible for the emission of a visible radiation called Cerenkov Radiation.
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Instead of getting a ring of photons that simply moves outward, this particle — moving faster than light in the medium it travels through — will emit a cone of radiation that travels in the same direction of motion as the particle emitting it.
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Relativisitic effect,when the object moves in the velocity near the speed of light (C),the original mass of the moving object will increase. The higher of the velocity,the more mass will increase to the objects.
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All electromagnetic waves travel at 300,000 km/s in the vacuum of space. ("Speed of light.") Nothing travels faster than the speed of light.
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All electromagnetic waves travel at the same speed through empty space. That speed, called the speed of light, is about 300 million meters per second (3.0 x 108 m/s). Nothing else in the universe is known to travel this fast.
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"Since nothing is just empty space or vacuum, it can expand faster than light speed since no material object is breaking the light barrier," said theoretical astrophysicist Michio Kaku on Big Think. "Therefore, empty space can certainly expand faster than light."
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Any object with mass accelerates, gaining energy, but it always needs more to accelerate further. So, propelling us to the speed of light would take an infinite amount of energy. ... So for now, at least, we won't be able to travel beyond the speed of light based on our current understanding of the laws of physics.
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Photons travel in harmonic waves at the fastest speed possible in the universe: 186,282 miles per second (299,792,458 meters per second) in a vacuum, also known as the speed of light.
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This was accepted in classical physics, and the special theory of relativity took pains to preserve the rule, despite the relativity of an object's motion. But if something can travel faster than light, it can travel backward in time, according to the theory.
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They don't travel faster than c(the speed of light), but rather faster than light in the same water. The light is slowed down by water because it interacts, neutrinos don't so they keep going at c. ... For example, the speed of the propagation of light in water is only 0.75c.
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So 1,400 light-years equals about 8.2 quadrillion miles. If we took one of our fastest probes to the planet, New Horizons, which is currently traveling about 36,000 miles per hour (50,000 km/h), it would take well over 26 million years to reach our destination.
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Because light travels at 45 degrees, anything traveling slower than light from this t=0 event is closer to the time axis than the light rays, and anything faster than light is further away from the time axis. ... Again, this is what a FTL and slower-than-light set of communications would appear like in a spacetime diagram.