can an object travels faster than the speed of light?
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Tachyons. In special relativity, it is impossible to accelerate an object to the speed of light, or for a massive object to move at the speed of light. However, it might be possible for an object to exist which always moves faster than light.
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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.
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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. The light rays define the future lightcone.
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In such a scenario, you can travel way faster than light without being even near the relativistic limit c and experiencing no considerable time dilation. This will enable you to see in the 'past'.
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John Houston, Learned lots of physics through KSB. According to Einstein, no information can travel faster than the speed of light. ... According to Einstein, no information can travel faster than the speed of light. However, let's imagine for this example that electricity does in fact travel at the speed of light.
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As dark energy causes the universe to expand ever-faster, it may spur some very distant galaxies to apparently move faster than the speed of light. ... Over and over (and over and over) we're told the supreme iron law of the universe: Nothing — absolutely nothing — can go faster than the speed of light.
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Enough already. 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.
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The speed of light is the speed electromagnetic waves travel. The speed of light is 3.0 x 108 m/s in space. The speed of light is the same in all matter. The speed of higher frequency light slows down more than lower frequency light in matter.
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Yes the trick isn't to actually travel faster than light, just use a shorter way. There is a theoretical model of a drive which could warp and bend space to travel faster than light.
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There is no limit to how fast the universe can expand, says physicist Charles Bennett of Johns Hopkins University. Einstein's theory that nothing can travel faster than the speed of light in a vacuum still holds true, because space itself is stretching, and space is nothing.
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Special relativity states that nothing can go faster than the speed of light. If something were to exceed this limit, it would move backward in time, according to the theory. ... If the neutrinos really are traveling faster than light, then they should be time travelers.
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Einstein said it is impossible, but as Jennifer Ouellette explains some scientists are still trying to break the cosmic speed limit – even if it means bending the laws of physics. "It is impossible to travel faster than light, and certainly not desirable, as one's hat keeps blowing off."
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LIGHT cannot travel faster than it does in a vacuum. This, at any rate, is what Einstein postulated in 1905. Now, however, a physicist in East Germany claims that photons may be able to break this universal speed limit, known as c.
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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.
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So, simply going faster than light does not inherently lead to backwards time travel. Very specific conditions must be met—and, of course, the speed of light remains the maximum speed of anything with mass.
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Time ran slower for the moving clocks just as Einstein predicted. So the faster something travels, the more massive it gets, and the more time slows – until you finally reach the speed of light, at which point time stops altogether. ... And so nothing can travel faster than the speed of light.
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In real life, heavier objects sometimes fall faster than light objects, but not because of gravity. Gravity makes all objects increase their speed at the same rate, regardless of how big they are. But if you drop 2 things outside, the air molecules may slow down one thing more than another.