A handy addition to your toolbox, the best laser tape measure delivers measurements instantly. Our product testing team tried ...

Most space missions rely on chemical rockets for propulsion. Rockets must carry fuel, which increases spacecraft mass and limits their speed and travel distance. For decades, researchers have explored ...

NTT Inc. and Mitsubishi Heavy Industries Ltd. (MHI) conducted an optical wireless power transmission experiment using a laser beam to wirelessly transmit energy over a distance of one kilometer. By ...

What if distance could be measured without lasers or timing? A camera-based optical method hints at a simpler way to track ...