One of the most frequent questions from pupils is "How far is a laser-pointer's range?". A 1W blue laser can easily cover as far as 450 miles and is useful for presentations. The beam can be directed at many different directions, and even towards moving vehicles. However, a laser with a high power can extend its beam to the point that it is unable to be seen from a vehicle. In these instances the use of a laser with a higher power can be employed.
The power of lasers in the pointer can vary. A laser with a power of 200mW can be seen over an entire mile. A 1000mW red laser could be visible from ten miles away. Some lasers have a shorter distance. According to ScienceDaily.com the world's longest laser spans 270 km. It is important to note that a projectile or "laser" within space will continue to radiate light till it hits something. A green laser however will only display a tiny area of a room.
If you're worried about safety, you might prefer an laser pointer that is green. It looks as bright as a 100-watt light bulb from three feet away, however, it's brighter than a quarter moon when looking up from the distance of 40,000 feet. Laser pointers that are green, on the other hand is not appropriate for use. It is recommended to purchase an authentic brand. If you're not sure then read the reviews and ask family and friends whether they've experienced any issues with these gadgets.
While heavy duty laser pointer pointers are able to travel for a long distance however, their range is very limited. They can be too powerful for the distance they can be able to cover. You'll need to keep them in a sealed enclosure to stop accidental spills. And while you're there, make sure to verify the distance that the laser can reach. This is a great way to protect yourself and heavy duty laser pointer avoid danger!
There are numerous ways to determine the distance a laser pointer can travel. The distance to the moon is 238 miles and it's possible to find one with a power of 5000mW. It's possible to use an flint laser of 50mW and work at least as far as it's designed to. A laser pointer with 5mW can be dangerous and also distracting.
Laser pointers are intended to function at a low power level. If you own an optical source that has at a few thousand milliwatts, you can see it for as long as a mile. If you're on an airplane, it may be difficult to spot the laser pointer , unless it's focused on your eyes. However, if you're in middle of nowhere the light of the laser pointer could be observed from miles away.