Lasers And Cameras Let Scientists See Around Corners
Camera And Object Around Corner Screenshot by author, from YouTube Vision is one of the more limited ways to perceive the world. As much as people can see within their line of sight, that line doesn’t bend around corners, unfortunately. This is frustrating at the best of times, and potentially tragic in others--for example, when a child runs behind a car and a driver can’t see them. Researchers at theHeriot-Watt University in Edinburgh created a system that, using cameras and lasers, can not only see around corners, but can tell if hidden objects have moved. Here’s how it works: a laser beam goes forward in a straight line angled slightly downward. Light scatters from where it hits, and some of that light is reflected off of objects not seen, like one around a...