[sdiy] OT: Laser Microphones?

[Glen]

At 02:23 PM 9/1/03 , Grant Richter wrote:

>When Theremin was recalled by the KGB and put into a technical Gulag, he
>went on to invent two of the most clever spy gadgets ever declassified ;^)
>
>The first was the passive cavity resonator in the wooden seal at the United
>States embassy (very famous). The second was the idea of using light
>reflected off of a window to form a passive listening bug. The idea was
>invented before the laser, originally using beams of infrared radiation.

The first gadget I had heard of, but didn't know who invented it. I also
didn't know that he also worked on what would later become the laser
microphone. Thanks for posting that.


later,
Glen