This unnamed (but snazzily dressed) model demonstrates “The Incredible Ruby Ray” – a laser that might one day map the moon, transmit TV shows, cauterize wounds and knock out missiles, PopSci reported in 1962. At the heart of the $2,950 PistoLaser, made by Kollsman Instrument, is a two-inch ruby that amplifies light into a coherent beam. The writer gleefully wonders if the double-trigger device could be a forerunner to a real "death-ray gun."
Five amazing, clean technologies that will set us free, in this month's energy-focused issue. Also: how to build a better bomb detector, the robotic toys that are raising your children, a human catapult, the world's smallest arcade, and much more.