Скачать или смотреть Britain Gave Away Its Greatest Secret in 1940 — Here’s Why

In the autumn of 1940, Britain secretly sent a small copper device across the Atlantic in a black metal box designed to sink if torpedoed. Inside was the cavity magnetron, an invention that would change the course of World War II and ultimately save Britain from starvation and defeat.
At a time when Nazi U-boats were destroying Allied shipping and radar technology was failing, two overlooked scientists—John Randall and Harry Boot—solved a problem American laboratories believed was impossible. Their breakthrough allowed radar to operate at microwave wavelengths, making submarines visible at night and through clouds for the first time.
This documentary explores:
• The Battle of the Atlantic
• Why Britain gave its greatest secret to America
• The Tizard Mission
• How radar destroyed the U-boat threat
• Why D-Day may never have happened without this invention
• And how this same technology ended up in your kitchen microwave
Often overshadowed by the atomic bomb, radar influenced every day of the war. This is the untold story of the invention historians call “the most valuable cargo ever brought to American shores.”