A: The light from a laser in space would continue on forever unless it hit something. However, if you were far enough away, you wouldn't be able to detect the light. If you go far enough away, the light will eventually spread out far enough to be undetectable.
Do laser pointers have a range?
How can a laser pointer have range of several kilometers in atmosphere? Laser pointers manufacturers claim that some pointers have range of several kilometers. Okay, they use a powerful laser, but that powerful laser usually has power less than one watt.
How far can a laser beam travel in space?
Each laser has the power of about four laser pointers and must be detected by a spacecraft an average of 137 miles (220 kilometers) away. Even the ultra- precise assembly of the satellites isn't enough to guarantee the laser transmitted from each spacecraft will be aligned well enough to hit the other spacecraft.May 7, 2018
How far can a green laser pointer reach?
This green laser pointer has a reported range of 80 km (50 miles.) The laser is easily visible in the day time too, well over 30 meters (100 feet,) — and likely even more — even in bright daylight, I discovered (see image at the bottom.) SKYlaser laser pointers are about the size of a Sharpie pen.
Is 5mW laser powerful?
So the advantage of the 5mW version is: its beam is stronger than the 1mW version's. It could be used in the light pollution area. The advantage of the 1mW is: it is more power-effective than the 5mW version. So it could be used for a longer time than the 5mW version.
How far can a 1 mW laser go?
The 1 mW red pointer has a glare distance of 255 feet, compared to the same power green laser, which can cause glare at 490 feet.
Can a 5mW laser reach the moon?
The typical red laser pointer is about 5 milliwatts, and a good one has a tight enough beam to actually hit the Moon—though it'd be spread out over a large fraction of the surface when it got there. The atmosphere would distort the beam a bit, and absorb some of it, but most of the light would make it.
Is a 5mW laser dangerous?
FDA issued a December 2010 safety notification stating “Lasers that emit more than 5mW output power can cause irreversible eye injury of increasing severity with increased output power.” FDA noted that “Although illegal and potentially dangerous, they are increasingly available on the Internet and in stores.
Is it illegal to own a Class 3 laser?
Class IIIb lasers cannot legally be promoted as laser pointers or demonstration laser products. Higher powered Class IIIb or IEC Class 3B lasers are dangerous and can cause either temporary visual effects or an eye injury.Dec 4, 2017
How far does a laser pointer travel?
In total darkness we can see a <5mW 650nm laser around 500 - 1km away when it shines on a white surface. The divergence will make that projected dot 1km away a large dot that reach 20–30m in diameter, and very faint. Green YAG laser pointers at the same power, is in comperison visible up to 4–5km away.
What is a class3 laser?
Class 3 lasers are medium power lasers or laser systems that require control measures to prevent viewing of the direct beam. Control measures emphasize preventing exposure of the eye to the primary or specularly reflected beam.
Will a Class 3 laser start a fire?
This can be dangerous because all of the energy from the laser beam is depositing on your eye in one go. Class 3 lasers are EVEN more dangerous. But what's worse is class 4 lasers these lasers can start a fire. And so, you can imagine that these lasers can cause considerable damage to your eyes and skin.