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juanin 25-02-2013
juanin - Keele University
"(""What wavelengths is light made up of?"") ------------------------------- The visual spectrum exists between 400 nm (4.0 x 10^-7 m) violet and 700 nm (7.0 x 10^-7 m) red. The colors of the visible spectrum lie between those two wavelengths. ("".... Our eyes have cones that detect light in the 419 nm (blue range, 532 nm (green); and peaks at 558 nm (red) range. This visual system is called a trichromatic color system. Color vision is possible because the overlapping sensitivity ranges of the three pigments permit ""color mixture"" to occur in the brain. ...."")"
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padmavati 16-04-2013
padmavati - Bengal Engineering & Science University
This distance as a distinctive feature of radio waves from a transmitter
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