The most frequently asked question by pupils is "How far can a laser's pointer travel?". A blue laser of 1W can easily cover as far as 450 miles and is ideal for presentations. The beam is able to be directed in a variety of directions, including towards vehicles moving. But a high-power laser could extend its beam to the point that it would be unable to be seen from vehicles. In these instances it is possible for a more powerful laser to be employed.

The laser power of the pointer can vary. A green laser of 200mW could be seen over a mile away. A red laser of 1000mW can be visible from ten miles away. Some lasers have a shorter range. According to ScienceDaily.com the world's largest laser spans 270 km. It's worth noting that a projectile or "cheap laser pointer" in space will continue to radiate light till it hits something. The green laser however will only show a small area across a room.

If you're worried about security, you may consider an laser pointer that is green. It looks as bright as 100-watt light bulbs at three feet, however, it's brighter than a quarter moon when looking upwards from the distance of 40,000 feet. A green laser pointer, on the other hand isn't appropriate for use. You should always buy an established brand. If you're not certain, read reviews and ask family and friends about any incidents they've experienced using these devices.

While laser pointers are able to travel for long distances however, their range is very only limited. This is due to the fact that they may be too powerful for the distance they can be able to cover. You'll need to keep them in a sealed housing to prevent accidental spills. While you're there, be sure to look over the range of the laser. It's a great way to protect yourself and avoid a dangerous situation!

There are numerous methods to calculate the distance a laser can travel. Distance to moon 238 miles and you can find one with a power of 500mW. It's possible to use the 50mW laser, and it will work at least as far as it's intended to. Using a 5mW laser pointer can be dangerous and also distracting.

Laser pointers are designed to operate at a lower power level. If you own an optical source that has just a few thousand milliwatts in power, you can see it for up to a mile. If you're in aircraft, you might be difficult to spot the laser's pointer unless focused on your eyes. But if you're in the far reaches of the wilderness the light of the laser pointer can be observed from miles away.