Radar (2001, WWII Documentary)

At the beginning of World War Two, radar was in its infancy. Huge towers were erected along Britain's south coast which tracked German planes as they crossed the English Channel. Without radar and the advanced warning of the German arrival it gave, Britain could well have lost the Battle of Britain. But as the war progressed radar developed at a fantastic rate. When the brilliant scientists at MIT got to work on it they found literally hundreds of uses for radar from aiming gunsights to identifying ships at sea. And the radar systems got smaller and smaller until they could be carried in the fuselage of a ship or in the control room of a submarine.

Alex4History's supplementary notes:
From the "Battle Stations" series.
Narrated by: James Faulkner
All DVD Extras joined to the film, includes interview with Radar Engineer Sir Edward Fennessey

https://en.wikipedia.org/wiki/Radar

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