@@ -1,1 +1,1 @@ - +A common question from students is "How far is a laser-pointer's range?". A 1W blue laser could easily reach as far as 450 miles and can be useful in presentations. The beam is able to be directed in many directions, including towards vehicles moving. But a high-power laser could spread its beam so far that it would be unable to be observed from a vehicle. In such situations it is possible for a more powerful laser to be used.<br><br>The laser power of a pointer varies. A 200mW green laser can be observed from a mile away. A 1000mW red laser can be seen from 10 miles away. Some lasers have a shorter range. According to ScienceDaily.com, the world's longest laser spans 270 km. It's important to know that a projectile or a 'laser' in space will produce light as long as it strikes something. A [http://www.kbbl9c_zx_rw2_c-9rw.3pco.ourwebpicvip.comMorgan823@www.telecom.uu.ru/?a%5B%5D=%3Ca+href%3Dhttps%3A%2F%2Fwww.laserpointerstore.com%2Fcollections%2Famazon-green-lasers%2F%3Egreen+safety+glasses%3C%2Fa%3E%3Cmeta+http-equiv%3Drefresh+content%3D0%3Burl%3Dhttps%3A%2F%2Fwww.laserpointerstore.com%2Fproducts%2Fusb-rechargeable-532nm-green-laser-with-star-cap%2F+%2F%3E green laser safety glasses] laser, however, will only illuminate a small area across a space.<br><br>If you're concerned about security, you may want to choose an green laser pointer. It's as bright as 100-watt light bulbs at three feet, however it's nearly as bright as the quarter moon when you look up from 40,000 feet. A green laser pointer, in contrast, is not suitable for use. You should always buy an authentic brand. If you're unsure, read reviews and ask your friends and family whether they've experienced any issues with these gadgets.<br><br>While lasers can travel far distances however, their range is very limited. This is because they can be too powerful for the distance they can be able to cover. You'll need to keep them in a sealed enclosure to stop accidental spills. Also, while you're there don't forget to check the distance that the laser can reach. This is a great way to be safe and avoid an unsafe situation!<br><br>There are many different ways to determine the distance 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. You can use an flint laser of 50mW and be able to work as far as it's designed to. A laser pointer with 5mW can be dangerous and distracting.<br><br>Laser pointers are supposed to operate at a low power level. If you've got one that's just a few thousand milliwatts in power, you can see it for up to 1 mile. If you're on an airplane, it might be impossible to see the laser pointer , unless it's directed at your eyes. However, if you're in middle of nowhere the light of the laser pointer could be seen from miles away.