Sci-fi movies always make laser beams look like they move at about the speed of a bullet, when in fact they move much much faster. Laser beams move at the speed of light, so we perceive lasers as moving instantaneously. But if they’re that fast, how can a man stop a laser beam midair?
Stop robocalls for good with Kim’s eBook
Robocalls interrupt us constantly and scam Americans out of millions of dollars every year. Learn Kim's best tricks for stopping annoying robocalls in this handy guide.