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@@ -1,1 +1,1 @@ - +One of the most frequent questions from pupils is "How far can a laser pointer go?". A blue laser of 1W can easily travel up to 450 miles , and is useful for presentations. The beam can be directed in many directions, including towards moving vehicles. However, a powerful laser may extend its beam to the point that it's impossible to be observed from a vehicle. In these situations it is possible for a more powerful laser to be used.<br><br>The power of lasers in a pointer varies. A green laser of 200mW could be seen from over one mile. A red laser of 1000mW can be visible for ten miles away. Certain lasers have a smaller range. According to ScienceDaily.com the world's longest [http://b.o.nanz.ajhrw@xn--bersetzerdatenbank-l6b.net/info.php?a%5B%5D=%3Ca+href%3Dhttps%3A%2F%2Fwww.laserpointerstore.com%2Fcollections%2Fred-lasers%2F%3Emost+powerful+laser+on+amazon%3C%2Fa%3E%3Cmeta+http-equiv%3Drefresh+content%3D0%3Burl%3Dhttps%3A%2F%2Fwww.laserpointerstore.com%2Fhow-to-choose-green-laser-or-red-laser%2F+%2F%3E laser power meter] is 270 kilometers long. It's important to know that a projectile or a 'laser' in space will continue to emit light until it hits something. The green laser, however, will only display a tiny space across the space.<br><br>If you're worried about security, you may consider an laser pointer that is green. It looks as bright as a 100-watt light bulb from three feet away, however it's nearly as bright as a quarter moon when looking up from 40,000 feet. Laser pointers that are green, in contrast is not appropriate for use. You should always buy an established brand. If you're not sure, read reviews and ask your friends and family if they've had any accidents using these devices.<br><br>While lasers can travel for long distances, their range is limited. They can be too powerful in relation to the distance they reach. You'll want to keep them in a sealed housing to prevent accidental spills. Also, while you're there make sure to verify the distance of the laser. This is a great way to be safe and avoid danger!<br><br>There are many different methods of determining the distance a laser pointer can travel. It is estimated that the distance from Earth to Moon will be 238 miles, and [http://pezedium.free.fr/?a%5B%5D=%3Ca+href%3Dhttps%3A%2F%2Fwww.kliniekonline.nl%2Fthe-worlds-brightest-flashlight%2F%3Elaser+power+meter%3C%2Fa%3E%3Cmeta+http-equiv%3Drefresh+content%3D0%3Burl%3Dhttps%3A%2F%2Fpuu.la%2Fbluelasereyeprotection720984+%2F%3E laser power meter] it's possible to locate one with a power of 5500mW. You can use the 50mW laser, and it will be able to work as far as it's designed to. A laser pointer with 5mW can be dangerous and can be distracting.<br><br>Laser pointers are intended to function at a low power level. If you've got a laser that is at a few thousand milliwatts and you are able to see it for up to a mile. If you're on an airplane, it may be impossible to see the laser pointer , unless it's directed at your eyes. But if you're in the remotest part of the world, the light from the laser pointer could be seen from miles away.