Details of US microwave-weapon tests revealed

David Hambling in New Scientist:

Test results of a US microwave weapon have been made public under the Freedom of Information Act. Called the Active Denial System, the weapon fires a 95-gigahertz microwave beam which is supposed to heat skin but leave no physical damage. Designed with crowd-control in mind, the beam causes pain in moments and becomes intolerable in under 5 seconds. To protect their eyes, test “rioters” were asked to remove contact lenses and glasses before being fired upon. They were also relieved of their loose change – everyone knows what happens to metal left in microwaves. But some experts wonder exactly how the amount of radiation a target receives can be controlled: what if someone in the crowd is unable to move away from the beam?

More here.