A common question from students is "How far is a laser-pointer's range?". A 1W blue laser could easily travel as far as 450 miles and is ideal for presentations. The beam can be aimed at many different directions, and even towards moving vehicles. But a high-power usb rechargeable laser pointer could extend its beam to the point that it's impossible to be observed from vehicles. In these instances the use of a laser with a higher power can be used.

The power of the laser beam from an object varies. A laser with a power of 200mW can be seen over a mile away. A 1000mW red laser can be seen from 10 miles away. Some lasers have a shorter distance. According to ScienceDaily.com the world's longest laser spans 270 km. It's important to know that a projectile or 'laser' within space will continue to radiate light till it hits something. The green laser however will only illuminate a small space across the room.

If you're concerned about security, you may want to choose an green laser pointer. It looks as bright as a 100-watt light bulb at three feet, however it's nearly as bright as the quarter moon when you look up from the distance of 40,000 feet. Laser pointers that are green, on the other hand isn't safe to use. Always choose an authentic brand. If you're not sure, read reviews and ask family and friends about any incidents they've experienced using these devices.

While lasers can travel far distances, their range is restricted. This is due to the fact that they may be too powerful for the distance they be able to cover. You'll want to keep them in a sealed enclosure to prevent accidental spills. While you're there, make sure to verify the range that the laser can reach. It's a great way to ensure safety and avoid a dangerous situation!

There are numerous methods to calculate the distance that a laser pointer can travel. The distance to the moon is 238 miles and it's possible to find one that has a power of 5000mW. It's possible to use an flint laser of 50mW and perform at least as well as it's intended to. A laser pointer with 5mW could be risky and also distracting.

Laser pointers are supposed to function at a low power level. If you have one that's at a few thousand milliwatts that you can see for as long as 1 mile. In the case of aircraft, you could 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 light of a laser pointer can be observed far away.