Holograms lighten the payload of unmanned aerial vehicles
ARLINGTON, Va. – US Air Force scientists have devised a way to make un-manned aerial vehicles (UAVs) better eyes in the sky, besides making them lighter and more efficient. Also known as drones or pilotless aircraft, UAVs increasingly are being used for reconnaissance missions by both military and commercial operators. The aircraft can acquire intelligence on enemy combatants, locate terrorism suspects, measure instances of extreme weather, and inspect remote oil, gas and power lines, among many other u...