@@ -1,1 +1,1 @@ - +A common question from pupils is "How far is a laser-pointer's range?". A 1W blue laser can easily reach up to 450 miles and is ideal for presentations. The beam is able to be directed in many directions, including towards moving vehicles. However, a laser with a high power can radiate its beam so wide that it's impossible to be seen from vehicles. In such situations, a higher-powered laser can be employed.<br><br>The power of lasers in an object varies. A laser with a power of 200mW can be observed from one mile. A 1000mW red laser could be visible for ten miles away. Certain lasers have a smaller distance. According to ScienceDaily.com the world's longest laser measures 270 kilometers. It's important to know that a projectile or "laser" within space will continue to emit light until it hits something. The green laser however will only illuminate a small area across a room.<br><br>If you're concerned about safety, you might consider an laser pointer that is green. It looks as bright as an 100-watt light bulb when viewed at three feet, but it's as bright as a quarter moon when looking up from the distance of 40,000 feet. A green laser pointer, however, is not suitable for use. Always choose an established brand. If you're unsure then read the reviews and ask your friends and family about any incidents they've experienced using these devices.<br><br>While lasers can travel for a long distance however, their range is very only limited. They can be too powerful for the distance they be able to cover. It is recommended to store them in a sealed housing to prevent accidental spills. And while you're there, don't forget to check the capabilities of the laser. It's a great way to ensure safety and avoid an unsafe situation!<br><br>There are numerous methods to calculate the distance a laser can travel. It is estimated that the distance from Earth to Moon will be 238 miles and it's possible to locate one with a power of 500mW. You can use an flint laser of 50mW and perform at least as well as it's designed to. A laser pointer with 5mW can be dangerous and also distracting.<br><br>Laser pointers are intended to operate at a lower [http://bbs.ibreader.com/home.php?mod=space&uid=1523723&do=profile power meter laser] level. If you have one that's a few thousand milliwatts that you can see for as long as 1 mile. If you're on the air, [https://www.penexchange.de/pen-wiki/index.php/Benutzer:AliciaZ222 power meter laser] it might be impossible to observe the laser pointer , unless it's directed at your eyes. However, if you're in far reaches of the wilderness the light of the laser pointer can be seen from miles away.