The most frequently asked question by students is "How far is a laser-pointer's range?". A blue laser of 1W can easily travel as far as 450 miles and can be useful in presentations. The beam can be directed in many directions, including towards vehicles moving. But a high-power laser could 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 used.

The laser power of an object varies. A 200mW green laser can be seen over a mile away. A 1000mW red laser could be visible for ten miles away. Certain lasers have a smaller range. According to ScienceDaily.com, the world's longest laser measures 270 kilometers. It's important to know that a projectile or a "laser" in space will produce light as long as it hits something. The green laser however will only display a tiny area across a room.

If you're worried about safety, you might prefer an laser pointer that is green. It looks as bright as 100-watt light bulbs from three feet away, however, it's brighter than a quarter moon when looking up from the distance of 40,000 feet. A green laser pointer, however is not safe to use. You should always buy a reputable brand. If you're not certain then read the reviews and ask friends and family if they've had any accidents using these devices.

Although laser pointers can go far distances, their range is restricted. This is due to the fact that they may be too powerful for the distance they reach. You'll need to keep them in a sealed enclosure to stop accidental spills. While you're there, make sure to verify the range for the range of laser. It's a great way to ensure safety and avoid danger!

There are a variety of methods of determining the distance a laser can travel. It is estimated that the distance from Earth to Moon will be 238 miles, and it's possible to find one that's powered by 5500mW. You can use an flint laser of 50mW and perform at least as well as it's intended to. A laser pointer with 5mW can be dangerous and also distracting.

Laser pointers are supposed to operate at a lower power level. If you've got an optical source that has a few thousand milliwatts that you can see for up to 1 mile. In the case of the air, it may be impossible to see the laser pointer , unless it's focused on your eyes. But if you're in the far reaches of the wilderness the light of the laser pointer can be observed far away.