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Seeing the invisible: the fascinating history of radar invention
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Seeing the invisible: the fascinating history of radar invention

So here's the thing - radar has quite a journey behind it, and it's fascinating how many brilliant minds almost stumbled onto it without realizing what they'd found. Heinrich Hertz discovered that radio waves could bounce off objects back in 1886, but he never took it further, and neither did Aleksandr Popow when he noticed interference between ships on the Baltic. It wasn't until Christian Hülsmeyer, a German inventor, actually used radio waves on purpose to detect a ship in thick fog in 1904 that someone truly grasped the potential - and of course, the military rejected his telemobiloscope. What really changed everything was Albert Hull's invention of the magnetron in 1921, a powerful transmitter that finally gave radio waves enough energy to create echoes strong enough to detect distant objects.
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