For a human, 380 to 750 nanometres. Most people are around this range; some may able to see colours slightly above or below this range.
http://wiki.answers.com/Q/What_is_the_wavelength_of_vis...
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Visible spectrum - Wikipedia, the free encyclopedia
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The visible spectrum is the portion of the electromagnetic spectrum that is visible to (can be detected by) the human eye. Electromagnetic radiation in this range of wavelengths is called visible l...
en.wikipedia.org/wiki/Visible_spectrum
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Light - Wikipedia, the free encyclopedia
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Light is electromagnetic radiation, particularly radiation of a wavelength that is visible to the human eye (about 400–700 nm, or perhaps 380–750 nm ). In physics, the term light sometimes refers t...
en.wikipedia.org/wiki/Light
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The visible violet light has a wavelength of about 400 nm. Within the visible wavelength spectrum, violet and blue wavelengths are scattered more efficiently than other wavelengths.
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eosweb.larc.nasa.gov/EDDOCS/Wavelengths_for_Colors.html
eosweb.larc.nasa.gov/EDDOCS/Wavelengths_for_Colors.html
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Every wavelength of light corresponds to a color which was assigned by people for easier recognition. The longer wavelengths appear as red while the shorter visible wavelengths appear as blue or violet.
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hypertextbook.com/facts/2002/PavelBorodulin.shtml
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The range of wavelengths for visible light is 380 to 750 nm.
http://answers.yahoo.com/question/index?qid=20081116132...
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The wavelength of visible light is 400-700 nm, with the maximum sensitivity at 555 nm. This is in the middle of the range of colloidal dimensions, so colloids can be expected to have significant effects on a light beam.
http://www.du.edu/%7Ejcalvert/phys/colloid.htm
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The Effect of Wavelength of Visible Light on Photovoltaic Cell; Electricity Generation; S0715; Objectives/Goals; What is the effect of wavelength of visible light on photovoltaic cell electricity generation? The objective is to develop a more efficient method of using light for solar energy.
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www.usc.edu/CSSF/History/2004/Projects/S0715.pdf
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But the research represent a step toward creating an optical cloaking device that might work one day for all wavelengths of visible light. The videos show how ... In previous work, Shalaev's team created a metamaterial that has a "negative index of refraction" in the wavelength of light used for telecommunications,
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www.spacedaily.com/reports/Engineers_Create_Optical_Clo...
www.spacedaily.com/reports/Engineers_Create_Optical_Cloaking_Design_For_Invisibility_999.html
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