The green spot from the 200mw green laser was nothing short of "very dramatic". In most cases, a laser pen emits light in the form of a laser beam.Lasers are amazing light beams powerful enough to zoom miles into the sky or cut through lumps of metal.A laser beam is like a parade of soldiers all marching precisely in step.A common question to consider when browsing different laser pointers online is, "how far can a laser beam reach?" A green laser can in essence, once it hits space, travel forever at the speed of light...because space is a vacuum. 100 mW red laser pointers probably only about 20 milliwatts, and green. i tried google, some say forever... many different opinions..
At the Nebraska Star Party, we could often see the beams from the simple 5 mw lasers being used for the Beginner's Field School star talk going up into the sky at distances of up to nearly 600 feet from where they were being fired. Today, you can buy a green laser pointer the size of a ball point pen for $15. Example: crisp night with low humidity I can see the beam from my green laser as a nice thin line hitting low clouds and hitting a tower several miles away. For rifles, you can make the call, but I rarely need to shoot anything more than one-quarter mile away. It travels at the speed of light, meaning it will hit the moon in 1.2 seconds and pass pluto in a matter of minutes. This experiment was done with a 1mW laser. You must log in or register to reply here. You can used google maps to determine how for they are from your location.

I mean come on, a 532 nm green laser wavelength is obviously superior to a laughable 650 nm red laser wavelength. The photos were taken with the lasers about 10 feet from the target.

For firearms, you need a laser to project a beam as far as you want to shoot. Red laser pointer, wavelength 630-670nm green laser pointer is more for longer. i tried google, some say forever... many different opinions.. All of factors above are important to determine how far a laser beam can be visible for. And unlike a red laser, the green beam itself can be seen in mid-air in dark conditions, not just the laser beam dot. (VISUALLY, the red spot appears smaller and tighter than the green, but I didn't bother to try to estimate the red's size).Sorry to go off-topic here, but @Ibuprofen200mg, I notice you have the AtlasNova red laser pointer. While you shouldn't point your laser at any inhabited structure as to cause annoyance, you could just check it seeing if you can hit objects of know distance from you such as mountains (if possible), cell phone/radio towers etc. (VISUALLY, the red spot appears smaller and tighter than the green, but I didn't bother to try to estimate the red's size).Just be careful not to cut any of the supports on that water tower with the Laser- it looks like it's already leaning now............................ The first red lasers was released in the early 1980s. For most handguns, 100 feet is more than you will ever need. Fast Delivery However, on a foggy night the beam appears as a fat glowing "light saber" sort of thing and only travels a few hundred meters at best. Twenty years ago, a green laser would set you back $100,000 and occupy a good-sized dining room table. JavaScript is disabled.

For these experiments, I lightly but firmly held the lasers against my right temple to hold them fairly steady; with a bright green beam shooting out towards the target. My pointing-at-the-moon thing might not have been that crazy after all. Like Laserbee said, it is heavily dependent on atmospheric conditions as particles in the air scatter the light in the beam which makes it more visible but reduces the overall distance that the beam will be visible. I've already used binoculars with the 200mw green @ ~260 meters (and the ~380mw red), to help "focus to infinity" better (the focused green spot @ ~ 260 meters appeared to be a little over 30 cm, BTW, from comparing it to the size of automobile license plates). I think all he wants to know is how far out will the beam itself be visible. Since the Rotary Laser Level is the center of the range, the distance in any one direction is the radius, or one-half the diameter specified. Low Price via Factory-Direct 30-Day Satisfaction Guarantee Let's talk about it.Laser beam is a strong, thin, monochromatic, directional ray of electromagnetic energy or radiation inside the visible light spectrum.Laser beams can be used for transmitting optical energy to rather small spots or with low beam divergence over large distances.A laser beam of visible light with sufficiently high power may be visible when propagating in air.The range and visible distance of any laser will depend on a few different factors.●Output power ( mw ) - A 200mW laser will be visible for more than 1 miles while a ●Wavelength ( nm ) - A green laser pointer is more visable than a All of factors above are important to determine how far a laser beam can be visible for.●Medical procedures involve using laser beams for performing heart surgery, eye, cancer and cosmetic operations.●Astronomy enthusiast sometimes choose a bright laser as a astronomy laser pointer to point the stars.●Common uses of laser beams include DVD and CD players, computer mice, optical scanners and laser printers.
Under a truly dark sky, that beam visibility range can sometimes go *much* farther. Safe & Trustworthy That’s closer than I shot the drills, but my camera can’t see the laser as well as a human so the lasers had to be moved in for the pictures. Think of how far one of those match-lighting 1500mW lasers can reach. Rotary Laser Level Working Range. It can reach across the solar system. Let me know how that turns out.I've already used binoculars with the 200mw green @ ~260 meters (and the ~380mw red), to help "focus to infinity" better (the focused green spot @ ~ 260 meters appeared to be a little over 30 cm, BTW, from comparing it to the size of automobile license plates). Class 3 can go up to 100mw but are not classified for civilian use. First of all, there is that bright green beam. Green laser pointers are amazingly useful tools for teaching the general public about the night sky, it's easy to point out specific targets and have … The professors filled a dummy’s mouth with a mix of glycerine and water, then installed a pump to force the dummy to cough and see how far the droplets travel using green laser light. How far the rotary laser goes is typically specified in terms of feet in diameter, which means your 360-degree range.

There IS a closer place, in my apartment complex, where I can see BOTH the radio tower (which is fairly tall) and the water tower (which is very big).