YouTuber and inventor Styropyro has built and tested a 250-watt handheld laser device. The system is roughly 50,000 times more powerful than standard commercial laser pointers, Styropyro claims in his ...

In 1960, a scientist called Theodore H. Maiman invented the first ever laser. 65 years later, we’ve living in a laser-powered world, with the narrow light beams – ‘laser’ stands for Light ...