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Young was the first to measure the wavelengths of different colors of light, in 1802. ... The sensitivity of avian UVS opsins vary greatly, from 355–425 nm, ...
upconversion of direct diode semiconductor lasers via thulium- or praseodymium-doped fibers at 480 nm [4] metal vapor, ionized gas lasers of helium-cadmium at 442 nm and 10–200 mW [5] argon-ion lasers at 458 and 488 nm [5] Lasers emitting wavelengths below 445 nm appear violet, but are nonetheless also called blue lasers.
A rainbow is a decomposition of white light into all of the spectral colors. Laser beams are monochromatic light, thereby exhibiting spectral colors. A spectral color is a color that is evoked by monochromatic light, i.e. either a spectral line with a single wavelength or frequency of light in the visible spectrum, or a relatively narrow spectral band (e.g. lasers).
The filters are selected so that the mean wavelengths of response functions (at which magnitudes are measured to mean precision) are 364 nm for U, 442 nm for B, 540 nm for V. Zero-points were calibrated in the B−V (B minus V) and U−B (U minus B) color indices selecting such A0 main sequence stars which are not affected by interstellar ...
Electromagnetic radiation with a wavelength between 380 nm and 760 nm (400–790 terahertz) is detected by the human eye and perceived as visible light. Other wavelengths, especially near infrared (longer than 760 nm) and ultraviolet (shorter than 380 nm) are also sometimes referred to as light, especially when the visibility to humans is not ...
Spectral colors simple table|colour=y}} will display the same table except that the British spelling "colour" is used instead of the American spelling "color". sRGB rendering of the spectrum of visible light
416 nm, 530.9 nm, 568.2 nm, 647.1 nm, 676.4 nm, 752.5 nm, 799.3 nm Electrical discharge Scientific research, mixed with argon to create "white-light" lasers, light shows. Xenon ion laser: Many lines throughout visible spectrum extending into the UV and IR: Electrical discharge Scientific research. Nitrogen laser: 337.1 nm Electrical discharge
The visible spectrum perceived from 390 to 710 nm wavelength. Electromagnetic radiation is characterized by its wavelength (or frequency) and its intensity.When the wavelength is within the visible spectrum (the range of wavelengths humans can perceive, approximately from 390 nm to 700 nm), it is known as "visible light".