What do you see traveling at the speed of light?
468247
The speed of light is constant, approximately 300,000km/second. \n\nThe principals of relative motion are that if you are travelling at a speed, and you look at something else travelling at another speed, your perception of the speed of that something else will be the difference between your two speeds. For example if you are travelling 60, and you get overtaken by someone going at 70, you perceive them to be travelling at 10, since they travelling at 10 relative to you. \n\nHowever, you can never perceive the speed of light to be anything different than it's constant value. Therefore, if you travel at half the speed of light, time actually slows down to half of what it normally is, since this is the only way for the speed of light to remain constant. \n\nTherefore if you travel at the speed of light, time stands still. To answer your question, I don't know what you'd see, but probably nothing!\n\nTheres a more complicated explanation involving the magnetic and electric fields of a photo of light, but that's the basics.
532772
nothing but light can travel at light speed.  the faster you go, the more energy it requires to accelerate.  at speeds that are close to the speed of light, you would need what is basically an infinite amount of power to accelate.  with current technology, it is impossible.  the only reason light can travel that fast, is because when it is created it is already traveling that fast.  it doesnt have to accelerate.
523357
*\nThe time-honored phrase "faster than the speed of light" might have to be reworked, thanks to the work of a Danish physicist.\n\nBy shooting a laser beam of light through a super-cooled glob of a kind of optical molasses, Lene Vestergaard Hau and her team at the Rowland Institute for Science in Cambridge, Massachusetts, were able to slow the speed of light down to just 38 miles per hour -- not even fast enough for the slow lane of a freeway.\n\nBy contrast, the normal speed of light in a vacuum is about 186,000 miles per second -- 20 million times as fast.\n\n"I would probably not call it God-like, but I would probably say ... we are tampering with nature in a very peculiar, very bizarre way," Hau says.\nlight maze\nHau points to an intricate maze of mirrors, part of the slowing process  \n\nThe research, conducted at the Rowland Institute and Harvard University, was reported in Thursday's issue of the journal Nature.\n\nThe substance that slows the light, called Bose-Einstein condensate, is a microscopic glob of atoms slowed to almost absolute zero -- 459.67 degrees below zero Fahrenheit, the lowest temperature theoretically possible.\n\nResearchers believe that it may be possible to slow the speed of light even further, by a factor of 1,000.\n\n"A human could move faster than that" says Stanford University's Steve Harris, who participated in the project. "But a human couldn't move through a Bose-Einstein condensate, I'll tell you that."\n\nResearchers believe learning how to slow light could eventually have a number of practical applications -- improving computers and communications devices, making television displays and laser light shows more vivid and creating better night-vision goggles.
763848
you couldn't drive at the speed of light.  But if you could drive near the speed of light, and turned on your headlights, light would leave your car at the speed of light relative to the car.  Einstein asked this very same question (except I think he used a train).  ANYWAY......this seems paradoxical and impossible.  But it's not....because TIME and SPACE (and distance and mass and all other measly "constants") change in order to make this possible that the speed of light still remain a constant.\nP.S. - Don't expect to understand all of this at once.  I'm pretty bright and it took me quite awhile to catch on to just how it works.
323277
http://math.ucr.edu/home/baez/physics/Relativity/SpeedOfLight/fast_light.html\n\nhave a look at this website
1187636
Light always travels at the same speed in a vacuum, the speed changes ever so slightly when it has to go through a different medium (water e.g.) but its so fast to begin with you wouldn't really notice it. 300,000 kilometers per second is beyond human comprehension, I mean you can only imagine how fast that is, you can't experience it or 'know' it.
11469
the speed of light = 299 792 458 m / s
337266
Um, well it depend on how you consider light. If you consider it as a stream of photons, then you might say that if you measure the positions of each of those photons it doesn't have velocity.\nIf you say it is a wave and always in motion then it is not relative to your velocity, exactly. Even if you were travelling at 30000000mph the light would still appear to be travelling at 3x10to the power of 8 m/s away from you. Light is the fixed speed limit for the universe. But at the far reaches where the material of space itself is expanding into nothing, it is expanding at a speed greater than the speed of light because that speed limit only applies to objects moving within the universe.
753670
The speed of light varies depending on the medium the light is traveling through.  In a vacuum however, which is the fastest medium in which light can travel, the speed of light is 299,792,458 m/s.
1126307
the opposite of the speed of light :)
25993
No.  No terrestrial object can travel at the speed of light.  If you were traveling at the speed of light you would literally dissentigrate from the millions of pounds of air resistance pinning you down.
588349
The speed of light is invariant---no matter how fast or slow its source is moving, the speed of light remains unchanged (...please don't ask 'why?' because nobody has the vaguest idea) If you're in spaceship going at 99% the speed of light and shine a light outward in any direction, that light will move away from you at the speed of light, no faster, no slower.\n\nWith regards to the answer given that mentions the Doppler effect. The FREQUENCY (wavelength) of light is affected by the speed of the light source (Doppler effect), but frequency has nothing to do with the actual velocity of the light itself.
391238
Contrary to popular belief, matter can actually travel at or faster than the speed of light, in a way. How?\nThe object must first be travelling close to the speed of light by conventional propulsion. In order for it to at least match light speed, it MUST utilize warp drives. (remember Star Trek?)\nWarp drives work by using gravity to condense the space fabric in front of the object and antigravity from antimatter to expand the space fabric behind the object. In theory, if the object is travelling close to the speed of light through adequately-condensed space, the object should be travelling at more than the speed of light if the space is expanded. Get what I mean?\nTry this representation. Picture a flat napkin. Superimpose the x and y coordinates of the Cartesian planes onto the napkin. Now, fold the napkin along the x-coordinates, starting from the left to the right, folding down the napkin for the first time, folding it up the second, folding it down the third... Now, soak one end of the napkin, I mean the longer ends, along the y-axis. The result is the whole sheet getting soaked, because the water travels through the "condensed" form of the napkin directly. If you soaked one end of an open, flat napkin, the water still travels at the same speed through the napkin, only this time, it doesn't travel as far within the similar periods of time.\nThe speed of the water represents the speed of your object, and the napkin represents the fabric of space. Get the picture? The object doesn't travel faster than light speed by itself. It never broke the laws of physics, but travelling through condensed space produces the intended effect.
775590
"...What makes the light go so fast?..." Asking why light travels as fast as it does is a useless question because there's no answer. Light behaves as it does because that's just the way it worked out in our universe.\n\n"...What exactly is the definition of light?..." Light is electromagnetic radiation in many forms. For example radio signals, radar beams, lasers, visible light, xrays, etc.,. Light can behave both as a series of waves (..sort of like sound waves), or as a stream of individual particles. Light is said to be invariant, that is it moves at only one velocity regardless of how fast its source might move. The carrier of light energy is the 'photon' which has a tiny mass, but only when its not moving, and since light is never motionless under usual conditions it actually has no mass.\n\n"...Is only one single atom or electron going at 186000 miles per hour considered as light?..." No! Atoms and electrons and other subatomic particles all have mass, and nothing with mass can move at the speed of light.
402996
Light travels at 186,000 miles per second, or 300,000 kilometers per second.
933622
Nothing is faster than light
359864
when u fire a rocket at high speed when u r moving at near speed of light relative to an observer, from the observer point of view, the rocket would never reach the speed of light due to relativistic effects of time dilation and length contraction. The observer would observe a flat rocket that is moving in slow motion.. the closer it is to the speed of light, the slower it moves, when it reach the speed of light, the observer would see the rocket as frozen and not moving. And from your point of view, u cannot accelerate the rocket to the speed of light RELATIVE to u.\n\nThe crucial point here is, RELATIVE. Everything has to be discussed relative to something else. There is no meaning in talking about ultimate speed since physical laws r invariant under translation and there is no prefered point of reference in the universe. When u talk about speed, u have to specify, with respect wo what.\n\nThere is no simultaneity in Einstein's relativity theory. The time u observe for a rocket to travel 1 mile is different from the time observed by the observer observing from somewhere else which is moving with some speed relative to u. This is relativity.\n\nAnd when u r moving near the speed of light, relative to an observer, u will not disintegrate and burst into some x-ray. As mentioned already, speed is relative. You are stationary with respect to your desk. But from the point of view of an alien observing from a planet a distance away, u r moving due to the motion of the Earth and sun and everything. Does that mean u or the alien would disintegrate and vanish into thin air???? no, of coz not. Pls do not think about friction.. that when u rub with air or other particles as u move thru space, u give off energy. no, that's not relativity.\n\nWe observe stars becoz they give off light from the nuclear reactions that is happening constantly in their core. We observe differing wavelengths due to the intensity of energy emitted, and also due to Doppler's effect due to expanding universe.\n\nThe centre idea of Einstein's relativity is that, there is no absolute space and time anymore. Space and time r different manisfestation of the same thing and they r interwoven into a connected flexible piece called the spacetime... instead of space and time in Newtonian physics. Relativity must not be understood in terms of theories of Newtonian physics. Relativity is not a new play on the stage of physics. Relativity is itself a new stage, literally.