More photos are taken every two minutes today than were taken during the entire 19th century.
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The U.S. military tested radar systems in classified research programs.
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The first mechanical computer, the Difference Engine, was designed by Charles Babbage in 1822 but never fully built.
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The internet connected computers across the world.
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Bluetooth is named after Harald Bluetooth, a 10th-century Danish king — the logo combines his initials in runic letters.
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WiFi was partly developed using technology from radio astronomy research trying to detect exploding black holes.
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The GIF format is older than the World Wide Web — it was invented in 1987.
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The automobile transformed transportation.
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The first computer mouse was made of wood.
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