The most frequently asked question by pupils is “How far can a laser pointer go?”. A blue laser of 1W can easily travel up to 450 miles , and is useful for presentations. The beam can be aimed in a variety of directions, including towards moving vehicles. However, a laser with a high power can radiate its beam so wide that it is unable to be observed from vehicles. In these instances it is possible for a more powerful laser to be used.
The power of the laser beam from a pointer varies. A green laser of 200mW could be seen over one mile. A 1000mW red laser can be visible for ten miles away. Certain lasers pointers have a shorter distance. According to ScienceDaily.com the world’s largest laser is 270 kilometers long. It’s important to know that a projectile or “laser” within space will continue to emit light until it strikes something. The green laser, however, will only show a small space across the room.
If you’re concerned about security, you may consider an laser pointer that is green. It looks as bright as an 100-watt light bulb when viewed from three feet away, 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 is not safe to use. Always choose an established brand. If you’re not certain then read the reviews and ask family and friends if they’ve had any accidents with these gadgets.
Although laser pointers can go for long distances, their range is only limited. This is because they can be too powerful for the distance they reach. You’ll need to keep them in a sealed enclosure to stop accidental spills. And while you’re there, be sure to look over the range of the laser. It’s a great method to be safe and avoid an unsafe situation!
There are many different methods of determining the distance a laser pointer can travel. The distance to the moon is 238 miles, and it’s possible to find one that’s powered by 5000mW. You can use an flint laser of 50mW and work at least as far as it’s supposed to. A laser pointer with 5mW could be risky and distracting.
Laser pointers are intended to operate at a lower power level. If you own one that’s at a few thousand milliwatts and you are able to see it for as long as one 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 middle of nowhere the light of the laser pointer can be seen from miles away.