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The Better Business Bureau just released some good news: In 2011, consumers consulted the BBB far more often than they did the year before, and they lodged fewer complaints. Surely that's a sign ...
Murphy has been working on laser and aviation issues since the 1990s, after owning his own laser display business. When consumer misuse of laser pointers picked up around 2004, he thought he could ...
Red (635 nm), blueish violet (445 nm), and green (520 nm) laser pointers. 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.
Laser pointers: 5 mW: CD-ROM drive 5–10 mW: DVD player or DVD-ROM drive: 100 mW: High-speed CD-RW burner 250 mW: Consumer 16× DVD-R burner 400 mW: DVD 24× dual-layer recording [129] 1 W: Green laser in Holographic Versatile Disc prototype development 1–20 W: Output of the majority of commercially available solid-state lasers used for ...
Furthermore, some lasers emit more than one wavelength of light, and this may be a particular problem with some less expensive frequency-doubled lasers, such as 532 nm "green laser pointers" which are commonly pumped by 808 nm infrared laser diodes, and also generate the fundamental 1064 nm laser beam which is used to produce the final 532 nm ...
To give another example, of a more powerful laser—the type that might be used in an outdoor laser show: a 6-watt green (532 nm) laser with a 1.1 milliradian beam divergence is an eye hazard to about 1,600 feet (490 meters), can cause flash blindness to about 8,200 feet (1.5 mi/2.5 km), causes veiling glare to about 36,800 feet (7 mi; 11 km ...