@@ -1,1 +1,1 @@ - +The most frequently asked question by students is "How far is a laser-pointer's range?". A [http://merky.de/rq3a1b 1W blue laser] could easily travel up to 450 miles , and is ideal for presentations. The beam can be directed at many different directions, and even towards moving vehicles. However, a powerful laser may radiate its beam so wide that it's impossible to be observed from vehicles. In such situations, a higher-powered laser can be used.<br><br>The laser power of a pointer varies. A 200mW green laser can be seen over a mile away. A red laser of 1000mW can be visible from ten miles away. Certain lasers have a smaller range. According to ScienceDaily.com, the world's longest laser is 270 kilometers long. It's worth noting that a projectile or a "laser" in space will produce light as long as it hits something. The green laser, however, will only show a small area of a space.<br><br>If you're concerned about safety, you might want to choose the laser pointer that is green. It's as bright as 100-watt light bulbs from three feet away, however, it's brighter than the quarter moon when you look upwards from 40, 000 feet. Laser pointers that are green, on the other hand is not safe to use. Always choose an authentic brand. If you're not sure then read the reviews and ask your friends and family about any incidents they've experienced with these gadgets.<br><br>While lasers can travel for a long distance, their range is only limited. This is because they can be too powerful for the distance they be able to cover. You'll need to keep them in a sealed housing to stop accidental spills. And while you're there, don't forget to check the distance that the laser can reach. It's a great way to ensure safety and avoid a dangerous situation!<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 it's possible to find one that has a power of 500mW. It's possible to use the 50mW laser, and it will be able to work as far as it's designed to. A laser pointer with 5mW could be risky and also distracting.<br><br>Laser pointers are supposed to operate at a low power level. If you've got an optical source that has a few thousand milliwatts and you are able to see it for up to 1 mile. In the case of the air, it may be difficult to spot the laser pointer , unless it's focused on your eyes. But if you're in the far reaches of the wilderness the beam of light from the laser pointer can be seen far away.