The Thing, aka The Great Seal Bug - the Soviet Spy Gadget That Baffled the U.S.

While preparing material for my next lecture, I kept running into videos about the Great Seal Bug, better known as The Thing. It was a brilliantly engineered passive listening device the Soviets used to spy on the U.S. during the early Cold War. Most videos mention how clever it was, but very few explain why it worked: how a simple length of wire becomes an antenna, how it can act as a passive radiator when illuminated by radio waves, how adding capacitance shifts its resonant frequency, and how sound waves themselves modulated that capacitance to carry speech. So I made a video that finally walks through the physics and the engineering behind this remarkable device, step by step. Here is the link to the video, CIA Secrets: Stealing Secrets --    • CIA Stealing Secrets   Vocademy - Free Vocational Education