Informally labeled the “pain ray,” the Active Denial System (ADS) is a non-lethal weapon being developed by the US military. Designed for use in crowd control operations, the ADS emits electromagnetic radiation that excites water molecules in the epidermis, causing an intensely painful burning sensation. Though the device does not actually burn the skin, its effect is said to feel similar to a hot light bulb being pressed against it. How long do these painful effects last? Discuss
Source: The Free Dictionary