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A laser pointer or laser pen is a (typically battery-powered) handheld device that uses a laser diode to emit a narrow low-power visible laser beam (i.e. coherent light) to highlight something of interest with a small bright colored spot. The small width of the beam and the low power of typical laser pointers make the beam itself invisible in a ...
Optical discs, laser pointers, data communications. 780 nm compact disc, 650 nm general DVD player and 635 nm DVD for Authoring recorder laser are the most common lasers type in the world. Solid-state laser pumping, machining, medical. InGaAsP: 1.0-2.1 μm Telecommunications, solid-state laser pumping, machining, medical.. lead salt 3-20 μm
Norway. Foundation stock. Greyhound, German Shorthair Pointer. Dog ( domestic dog) The Greyster is a type of sled dog bred for sled dog racing, especially dryland sports like canicross and bikejoring. [1] The greyster is crossbred from the Greyhound and the German Shorthair Pointer. [2]
A blue laser emits electromagnetic radiation with a wavelength between 400 and 500 nanometers, which the human eye sees in the visible spectrum as blue or violet. [1] Blue lasers can be produced by: direct, inorganic diode semiconductor lasers based on quantum wells of gallium (III) nitride at 380-417nm [2] [3] or indium gallium nitride at 450 ...
Laser pointers are used by the general public; sometimes they will be accidentally or deliberately aimed at or near aircraft. Lasers are even used, or proposed for use, with aircraft. Pilots straying into unauthorized airspace over Washington, D.C. can be warned to turn back by shining eye-safe low-power red and green lasers at them. [3]
Leader Dogs for the Blind is a guide dog training organization located in Rochester Hills, Michigan. It was founded in 1939 by Lions Club members Charles Nutting, Don Schuur and S.A. Dodge, [1] as the second guide dog organization founded in the United States and has paired over 14,500 dogs with the visually impaired worldwide, making it one of ...
Ariège Pointer. The Braque de l'Ariège is a normally proportioned dog with drop ears. The tail is traditionally docked. The coat is short and primarily white, speckled with larger patches of colours described as orange, liver, or chestnut on the head and ears. Size is about 60–67 centimetres (24–26 in) in height at the withers.
Adults are 18 to 38 inches (46 to 97 cm) in length and colored black or brown with three yellow length-wise stripes. Non-venomous. Thamnophis sirtalis. Eastern garter snake. Adults are 2 to 4 feet (0.61 to 1.22 m) in length and colored gray, brown or green with three yellow length-wise stripes. Non-venomous.
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