Do You Know ? How Far Laser Light can Reach ?
Laser light Travel
Image credits: Insidescience
An average Laser pointer has 0.005 watts power. If you pointed it directly at your eye from an arm’s length away, the little illuminated dot on your eye would be 30 times brighter than the sun light. So, don’t do this.
Still, the narrow beam will spread out over long distances. Around 100 meters away from a red laser pointer, its beam is about 100 times wider and looks as bright as a 100-watt light bulb from 3 feet away. Viewed from an airplane 40,000 feet in the air — assuming there’s no clouds or smog — the pointer would be as bright as a quarter moon. From the International Space Station, it would fade to roughly as bright as the brightest star in the night sky…..READ MORE