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Some of the colors that have been manufactured in addition to the common phosphors are green, red, blue, yellow, purple, orange, and white. The GTLSs used in watches give off a small amount of light: Not enough to be seen in daylight, but visible in the dark from a distance of several meters. The average such GTLS has a useful life of 10–20 ...
For example, a 10-watt continuous-wave yttrium aluminium garnet laser at 532 nanometers (green) can appear brighter to the eye than an 18-watt continuous-wave argon-ion laser that outputs 10 watts of 514 nm (green-blue) light plus 8 watts of 488 nm (blue) light. [9] Pulsing: some laser beams emit their energy in pulses.
In a technique known as blue field entoptoscopy, the effect is used to estimate the blood flow in the retinal capillaries.The patient is alternatingly shown blue light and a computer generated picture of moving dots; by adjusting the speed and density of these dots, the patient tries to match the computer generated picture to the perceived entoptic dots.
Light curing of a dental filling material. A dental curing light is a piece of dental equipment that is used for polymerization of light-cure resin-based composites. [1] It can be used on several different dental materials that are curable by light. The light used falls under the visible blue light spectrum. This light is delivered over a range ...
The House of Blue Light is the twelfth studio album by English rock band Deep Purple, released on 12 January 1987 by Polydor Records. It was the second recording by the reformed Mark II line-up , and the sixth studio album overall by this formation of the band.
Rayleigh scattering causes the blue color of the daytime sky and the reddening of the Sun at sunset. Rayleigh scattering (/ ˈ r eɪ l i / RAY-lee) is the predominantly elastic scattering of light, or other electromagnetic radiation, by particles with a size much smaller than the wavelength of the radiation.
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