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2. Laser lighting display - Wikipedia

   en.wikipedia.org/wiki/Laser_lighting_display

   Laser light is useful in entertainment because the coherent nature of laser light allows a narrow beam to be produced, which allows the use of optical scanning to draw patterns or images on walls, ceilings or other surfaces including theatrical smoke and fog without refocusing for the differences in distance, as is common with video projection ...

3. Laser pointer - Wikipedia

   en.wikipedia.org/wiki/Laser_pointer

   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.

4. Lasers and aviation safety - Wikipedia

   en.wikipedia.org/wiki/Lasers_and_aviation_safety

   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 ...

5. Free-space optical communication - Wikipedia

   en.wikipedia.org/wiki/Free-space_optical...

   [5] [non-primary source needed] However, laser-based free-space optics lost market momentum when the installation of optical fiber networks for civilian uses was at its peak. [citation needed] Many simple and inexpensive consumer remote controls use low-speed communication using infrared (IR) light. This is known as consumer IR technologies.

6. NASA laser message beams video of a cat named Taters ... - AOL

   www.aol.com/nasa-laser-message-beams-video...

   A laser communications experiment flying aboard NASA’s Psyche mission has beamed back a video to Earth from nearly 19 million miles (31 million kilometers) away — and the short clip stars a ...

7. News, Politics, Sports, Mail & Latest Headlines - AOL.com

   w.main.welcomescreen.aol.com

   Discover the latest breaking news in the U.S. and around the world — politics, weather, entertainment, lifestyle, finance, sports and much more.