A common question from pupils is "How far can a laser's pointer travel?". A 1W blue laser can easily reach as far as 450 miles and can be useful in presentations. The beam can be aimed in a variety of directions, including towards moving vehicles. However, a laser with a high power can spread its beam so far that it is unable to be observed from a vehicle. In these situations the use of a laser with a higher power can be used.

The power of lasers in an object varies. A laser with a power of 200mW can be observed from an entire mile. A 1000mW red laser can be visible for ten miles away. Certain lasers have a shorter distance. According to ScienceDaily.com the world's longest laser measures 270 kilometers. It's worth noting that a projectile, also known as a laser within space will continue to emit light until it hits something. A green laser, however, will only show a small space across the room.

If you're worried about safety, you might want to choose an green laser pointer. It's as bright a 100-watt light bulb from three feet away but it's as bright as a quarter moon when looking up from 40,000 feet. The green laser pointer however, is not appropriate for use. You should always buy an established brand. If you're unsure then read the reviews and ask family and friends if they've had any accidents with these gadgets.

Although laser pointers can go for a long distance, their range is limited. This is because they can be too powerful for the distance they can reach. You'll need to keep the laser in a closed housing to avoid spills that could happen. And while you're there, don't forget to check the capabilities that the laser can reach. It's a great method to ensure safety and 1W blue laser avoid a dangerous situation!

There are a variety of methods to calculate the distance that a laser pointer can travel. It is estimated that the distance from Earth to Moon will be 238 miles, and you can find one that has a power of 500mW. It's possible to use the 50mW laser, and it will be able to work as far as it's intended to. Utilizing a laser with a power of 5mW can be dangerous and distracting.

Laser pointers are intended to operate at a low power level. If you own an optical source that has a few thousand milliwatts that you can see for as long as a mile. If you're in an airplane, it could be impossible to see the laser's pointer unless focused on your eyes. However, if you're in middle of nowhere the beam of light from the laser pointer can be observed far away.