Roseann Albright

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 useful for presentations. The beam can be directed in many directions, including towards moving vehicles. But a high-power laser could radiate its beam so wide that it's impossible to be observed from the vehicle. In such situations, a higher-powered laser can be used.

The power of lasers in the pointer can vary. A 200mW green laser can be seen over a mile away. A red laser of 1000mW can be visible for ten miles away. Certain lasers have a smaller range. According to ScienceDaily.com the world's largest laser measures 270 kilometers. It is important to note that a projectile, also known as a "laser" within space will continue to radiate light till it hits something. The green laser however will only display a tiny area of a space.

If you're concerned about safety, you might prefer the green laser pointer. It looks as bright as 100-watt light bulbs from three feet away however, it's brighter than the quarter moon when you look upwards from 40,000 feet. The green laser pointer on the other hand, is not safe to use. It is recommended to purchase an established brand. If you're unsure then read the reviews and ask your friends and family about any incidents they've experienced with these gadgets.

Although branded laser pointers pointers can go for a long distance however, their range is very restricted. They can be too powerful in relation to the distance they cover. It is recommended to store them in a sealed housing to stop accidental spills. Also, while you're there don't forget to check the capabilities that the laser can reach. It's a great method to protect yourself and avoid an unsafe situation!

There are numerous methods of determining the distance a laser pointer can travel. It is estimated that the distance from Earth to Moon will be 238 miles, and it's possible to locate one that has a power of 5000mW. You can use the 50mW laser, and it will work at least as far as it's designed to. Utilizing a laser with a power of 5mW can be dangerous and also distracting.

Laser pointers are designed to operate at a low power level. If you have an optical source that has just a few thousand milliwatts in power that you can see for as long as a mile. If you're on an airplane, it could be impossible to see the laser pointer unless it's directed at your eyes. But if you're in the remotest part of the world the beam of light from a laser pointer can be observed from miles away.