Crowdfunded 'laser razor' begs the question of what the technology can and can't do

Since their first use in the 1960s, there has been a tremendous expansion of laser technology into an impressively wide range of uses, from fundamental science, healthcare and security to entertainment. Since Theodore Maiman's first working laser at the Hughes Research Laboratory in 1960 more than 55,000 patents on laser technology have been filed in the US alone.