How fast does UV light travel ?
956950
The exact same as all light -- all wavelengths travel the same\n\n3 x 10 ^ 8 m/s or 186,000 miles per second
214199
Yes. You need proof? UV is a radiation. Radiation is the travel or emission of waves.\nYou can see it in a magnetic spectrum. High frequency and low wavelength are those ionizing radiation. High wavelenth and low frequency are those non-ionizing radiation. \nPenetration of these waves are dependent on their frequencies. High frequencies are able to tranmsmit objects. \nUV is found in part with white light. White light is found at the mid part of the spectrum. UV is in part with white light but its on the ionizing side.\nMeaning, UV have higher frequency and lower wavelength that the white light, and it is more penetrating than the white light. \nHope I answered your question.
925293
c = lambda x nu\n\nc is the speed of light 3.0 x 10^8 m/s\n\nlambda is the wavelength\n\nnu is the frequency
426747
The speed of light is a measurement of how fast light travels in a vacuum. The speed of light also known as "c" as in the famous Einstein equation E=mc^2. And its equal to 299,792,458 m/s or in U.S miles per hour is about 670million miles per hour!!!!!!! It would take light coming form the sun only 8 seconds to arrive on earth which is 92million miles away. Now say "WOW!!"
402996
Light travels at 186,000 miles per second, or 300,000 kilometers per second.
1166593
The speed of light does depend on the medium in which it travels. See refraction \nRefractive Index = Speed of light in Vacuum / Speed of light in Medium\n\nRefractive index = c / v    where v<c  where c= 299,792.458 kilometer per second or 186,282.397 miles per second. http://en.wikipedia.org/wiki/Speed_of_light\n\nSee http://www.onlinephysicshelp.com/refraction.htm \n\nCURIOUS  is that the speed of light depends only on the medium it travels through. So when it travels in vacuum it is c, when in glass it is v and when it returns to vacuum it is again c.\n\nWhile The Michelson-Morley Experiment), by measuring the speed of a beam of light in the detection and against direction of the Earth's rotation, has demonstrated in 1887 no change in speed of light. That suggested that light wave propagates without a medium. \nhttp://en.wikipedia.org/wiki/Michelson-Morley_experiment  \n\nHowever \nmedium does have effect on its propagation: " The speed of light through a transparent medium (that is, not in vacuum) is less than c; the ratio of c to this speed is called the refractive index of the medium." http://en.wikipedia.org/wiki/Speed_of_light \n\nI hope that helps.
1120142
The question is too philisophical. We don't know WHY light travels so quickly, we just observe that it does. We can derive such a speed and we can derive the fact that it always travels at this speed no matter what your reference speed is. We have failed to find a situation where the speed of a single photon has not been the accepted speed of light.\n\nAlso, contrary to a previous post, light travels at a constant speed, independant of its frequency. This opposed to mechanical waves such as sound and water waves..
727056
I would guess that if you took a UV spectrum of ascorbic acid, you would find the maximum absorbance at 254 nm. Therefore, the most accurate analysis of the eluent would be looking at that wavelength.
13174
Hi Writholeen, the only flaw in JayNick's answer is the accuracy part. As per the National Institute of Standards and Technology, the exact value of Speed of Light in vacuum is 299,792,458 m/s. By exact, I mean there is no uncertainity till the last digit. \n\nTo be precise, what we usually call the "speed of light" is really the speed of light in a vacuum (the absence of matter). In reality, the speed of light depends on the material that light moves through. Thus, for example, light moves slower in glass than in air, and in both cases the speed is less than in a vacuum. However, the density of matter between the stars is sufficiently low that the actual speed of light through most of interstellar space is essentially the speed it would have through a vacuum, so we don't make much error by ignoring the difference.\n\nTo make it easier for you to convert, here is the speed in alternative units :\n\n(1) 983,571,056.4304461 foot/second\n(2) 11,802,852,677.165352 inch/second\n(3) 1,079,252,848.8 kilometer/hour\n(4) 299,792.458 kilometer/second\n(5) 582,749,918.3585312 knot\n(6) 880,991.0899527 mach\n(7) 670,616,629.3843952 mile/hour (mph)\n\nThese values are accurate to the 7th digit of decimal. \n\n\nFlaw in JayNick's answer:\n\nThe speed of light in kilometres per second is 279,600 kilometres/sec. Even if you approximate the actual value , 299,792.458 kilometer/second by round off the last three digit, the value would have been 300,000 kilometers per second.
133450
well, the usual rules of physics at such speed don't apply. so when you turn the headlights, the light will travel from them at approximately the usual speen of light, and i guess you won't notice anything unusual..\nfor more information check the subject at wikipedia. and the following subject: Constant velocity from all reference frames
15559
Light travels roughly 186,000 miles per second. Einstein once said that nothing can move faster than light, and this previously was an accepted truth because visible light was considered to be just a wave of energy. However, when studying how light reacts to strong gravitational pulls, such as one from a black hole, we can see that it bends under gravity. This indicates that it shares some characteristics with matter. It could even have a minute amount of mass. If light shares characterisitcs with matter, then we can harness it and use it the same way we do air in a jet engine. Can we not go faster than the wind naturally blows with a jet engine? Yes. Then I do not see why we can't go faster than light when harnessing light itself as energy.  There have been several questions like this, and I really feel that traveling faster than lightspeed is only decades away.
166740
I guess u need a UV light
166913
Actually, photons in vaccum are found to travel sometimes faster and sometimes slower than speed of light, but during very brief instants of time. If you are measuring velocities in a distance thats long enough (always in terms of atomic distances) the avarage speed turns to be the speed of light. But if you are measuring shorter distances (I don't know how short it has to be) you have to take into account that maybe you will measure a higher or lower speed than the light speed.\n\nWe can say that photons have a very high probability of travelling at the speed of light, and very small probabilities of travelling a bit faster or a bit slower. If the distance is long enough, the faster velocities will cancel with the slower ones, and the avarage will be light speed.
64217
to answer your question it is possible to go faster the the speed of light. The speed of light is 186,000 miles per second.\n\nIf zooming beyond the local speed limit is punishable by law, then some scientists may have a gargantuan speeding ticket to pay. \n\nIn a controversial experiment reported in this weeks journal Nature, scientists at the NEC Research Institute in Princeton, New Jersey claim to have broken the ultimate speed limit -- the speed of light. Though hotly contested, some say this achievement could dramatically increase the speeds at which we can send and receive information. \n\nTaught in physics classes the world over, Albert Einsteins theory of special relativity holds that no object or information can move faster than the speed of light in a vacuum, or 186,000 miles (300,000 kilometers) per second. But NECs Lijun Wang says he created an experiment in which a light beam raced through a gas-filled chamber so quickly, it exceeded the speed of light by a factor of 300. Whats more, the light pulse appears to have left the confines of the chamber before it even entered a seemingly impossible occurrence according to theories of causality, which predict that causes must always precede their effects. \n\n"It sounds crazy, but this can actually occur," said Raymond Chiao, a physicist at the University of California at Berkeley. Chiao, one of a group of researchers who have been working to break the speed-of-light limit, explained that although a common object such as a baseball could never be flung faster than the speed of light, pulses of energy with certain complex properties have been known to bend the rules. \n\n\n\n"It sounds crazy, but it actually can occur." \n\n\n\n\nIn fact, several recent experiments, including one done by Chiao earlier this year, have pointed to energy pulses zooming faster than light speed. Yet each of these experiments has been encumbered by severe limitations on measurement or observation of the energy pulses. In contrast, this latest experiment is being touted by some as the most dramatic example yet of light breaking its own speed barrier. \n\n"The effects are much larger and more spectacular" than previous observations, said Chiao. \n\nIn Wangs experiment, a pulse of light passed through a small chamber filled with atoms of elemental cesium. A light beam traveling through such a medium has two different velocities a velocity for the individual light waves in the beam and a group velocity for the entire beam. Oddly, some light waves in the beam can actually travel backward for miniscule amounts of time, creating a sort of "tail" behind forward-moving waves. As such, a light wave and its tail can leave the gas cavity at different times, creating the effect that the light beam has left the cavity before its even entered. \n\nConfused? Youre not alone. In fact, even scientists who are familiar with this area of study are unsure about the details of Wangs experiment. And many scientists said the experiments results are still open to interpretation. \n\nWilliam Happer, a physicist at Princeton University argued that several specific problems exist with the experiment, including the fact that pulses get distorted when passed through any media other than a vacuum, or empty space. In addition, he said Wang and his colleagues performed the experiment in a way that doesnt tell the whole story, and that it can be interpreted incorrectly. "This is anything but dramatic," said Happer. "If you look at the data, theres essentially no evidence that [the beam] is going faster than the speed of light." \n\nWhats more, most scientists agree that even if such a beam can be proved speedier than light, it would probably not be able to carry any information. Such a feat could conceivably allow data to be sent back in time, thus violating laws of causality and sending quantum physics into disrepair. \n\nOthers are more optimistic as to the possible
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.
26330
There is an ambiguity in the question!\nIt is not told in which medium it is.\nThe speed of light is 299,792,458 in vaccum & it is almost the same in air.
422778
The UV light has a cycle time that is faster than your eye can detect. Your computer monitor also has a refresh time, again, way too fast for you to see. But if the 2 times line up, it looks like your computer screen is flashing and you can just barely detect it. Highly annoying! Get a regular light bulb lamp for your computer room and leave the flourescent off- that should take care of it.