Test: Laser beam come from long distance 1.4KM green/red/blue laser beam

Test: Laser beam come from long distance 1.39KM green/red/blue laser beam

Shoot a few photos of laser backlight.
The experimental site is as follows: two bridge on the river is the experimental site.
The distance is 1.39 kilometers

Using cell phones to shoot, the effect is not very good, the actual much clearer than this.
Even so far away, or very dazzling, laser energy is very integrated, long-distance is still dangerous.

530nm 300mw Green Laser pointer (From LuckLaser)

445nm 2000mw Blue Laser pointer (From LuckLaser)

650nm 250mw Red Laser pointer (From LuckLaser)