A common question from learners is "How far can a laser pointer go?". A blue laser of 1W can easily travel as far as 450 miles and is ideal for presentations. The beam can be aimed in many directions, including towards moving vehicles. However, a powerful laser may spread its beam so far that it's impossible to be observed from the vehicle. In these situations the use of a laser with a higher power can be employed.

The power of the laser beam from a pointer varies. A green laser of 200mW could be observed from an entire mile. A 1000mW red laser could be visible from ten miles away. Certain 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 emit light until it hits something. The green laser however will only illuminate a small area across a room.

If you're worried regarding safety, you may prefer the green laser pointer. It looks as bright as an 100-watt light bulb when viewed from three feet away, but it's as bright as a quarter moon when looking upwards from 40, 000 feet. A green laser pointer, 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 if they've had any accidents using these devices.

Although laser pointers can go far distances, their range is limited. They can be too powerful in relation to the distance they be able to cover. You'll need to keep them in a sealed enclosure to avoid spills that could happen. And while you're there, be sure to look over the range of the laser. This is a great way to be safe and avoid an unsafe situation!

There are a variety of methods to calculate the distance a laser pointer can travel. Distance to moon 238 miles and it's possible to locate one that has a power of 5000mW. You can use an flint laser of 50mW and be able to work as far as it's designed to. Utilizing a laser with a power of 5mW could be risky and also distracting.

Laser pointers are supposed to function at a low power level. If you have a laser that is a few thousand milliwatts and you are able to see it for up to one mile. If you're on an airplane, it could be impossible to see the laser pointer unless it's directed at your eyes. If you're in the far reaches of the wilderness the light of the laser pointer could be observed from miles away.