Sensors are usually thought of in terms of physical devices that receive and respond to electromagnetic signals – from everyday sensors in our smartphones and connected home appliances to more advanced sensors in buildings, cars, airplanes and spacecraft. However present day physical sensors are severely limited in range to continuously …

Drones are increasingly making an impact on society and economy. Drones are used by the military for intelligence gathering, anti-aircraft target practice, and also for weapons platforms. They are also used for many civilian roles such as agricultural surveillance, mapping, tracking, search and rescue, traffic monitoring, firefighting, weather monitoring, engineering …

Torpedoes are self-propelled guided projectiles that operate underwater and are designed to detonate on contact or in proximity to a target. For the U.S. Navy, the modern torpedo enables submarines to defeat surface and undersea threats and gives surface ships and aircraft the means to reach beneath the surface and …