There are many different types of lasers—almost as many as there are applications for the same—but what ties them all together as a class is that they depend on the same physical effect: stimulated ...

Add Yahoo as a preferred source to see more of our stories on Google. (THE CONVERSATION) Nations around the world are rapidly developing high-energy laser weapons for military missions on land and sea ...

Add Yahoo as a preferred source to see more of our stories on Google. Green laser beam coming from a hand-held laser pointer. They're in grocery store scanners, internet connections and car backup ...

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Iain Boyd, University of Colorado Boulder (THE CONVERSATION) Nations around the world ...