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A computer's monitoring sounds became an early musical performance
Manchester's computer could emit pulses used to indicate what it was doing. Christopher Strachey programmed those pulses into melodies, and a BBC recording…
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Afsluitdijk turned the saltwater Zuiderzee into freshwater IJsselmeer
Completed in 1932, the Afsluitdijk cut off the saltwater Zuiderzee and created the freshwater IJsselmeer. The change devastated the region's saltwater fishing…
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How one Earth photo became TV logos
Apollo 17’s 1972 “Blue Marble” photo was in the public domain, making it an easy choice for television networks seeking a globe-themed broadcast logo.
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A movie projector has to stop the film to make it move
An intermittent mechanism advances a frame, then holds it still while light projects it. A shutter hides the movement to the next frame. The Maltese-cross…
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The hydrogen balloon that made flight steerable
Hydrogen lifted the balloon, while a steam engine spun a propeller to push it forward. The propeller gave the craft control over its direction instead of…
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J.P. Morgan locked bankers in his library during a panic
A financial panic sent bankers to Morgan’s library, where he kept them until they agreed on a $25 million bailout for trust companies. The rescue began with a…
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When Soviet artists trained workers like machines
In the 1920s, Aleksei Gastev used metronomes to synchronize workers’ movements, hoping to engineer a more productive workforce.
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The economist who proved communities can share resources
Elinor Ostrom studied communities sharing resources such as irrigation water and grazing land. People could build working rules, monitor use, and settle…
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Chile built a sci-fi cockpit for its economy
Project Cybersyn linked factories through telex reports and computer analysis in the early 1970s. A prototype operations room displayed information around…
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How a hotel cooling system caused a deadly outbreak
Legionella pneumophila traveled in fine droplets released by the hotel’s cooling towers. Once breathed into the lungs, the bacteria caused pneumonia in people…
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Hedy Lamarr's Ecstasy became a battle at the US border
Customs authorities objected to the 1933 film's sexual content, and imported copies were seized and destroyed. Court fights and edited versions followed.…
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Victorians watched animation by staring into mirrors
A slotted cardboard disc spun in front of a mirror made drawings appear to move. One animation showed a demon endlessly swallowing a man.
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Einstein's rival mistook heated walls for cosmic aether
Miller’s interferometer was built to detect tiny shifts in light, but temperature could shift the instrument itself or the air along the light paths. That…
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The bus that could switch from roads to rails
The vehicle carries road wheels for ordinary driving and a second set of guide wheels that lower onto rails. The guide wheels steer it along the track, while…
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An online fringe theory erased three centuries of history
Heribert Illig's Phantom Time Hypothesis claimed that part of the early Middle Ages had been invented. Personal webpages helped circulate the idea long after…
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Defining chaotic fluid dynamics with a tiny stream of dye
A thread of dye can stay neat in gently moving water because viscosity damps little disturbances. Speed the water up, and eddies begin pulling the color into…
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The Blue Train fits a private bath into a moving hotel suite
Its accommodation includes suites that function as lounges during the day and bedrooms at night, with en-suite bathrooms and bath options. The layout has to…
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A wrong assumption magnified America's biggest nuclear test
The 1954 Castle Bravo test yielded 15 megatons, far above the predicted six. Scientists had underestimated how lithium-7 in the fuel would react under the…
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Before board games, Milton Bradley sold spinning illusions
Milton Bradley’s paper strips showed figures in sequence; spinning them inside a wooden drum made the images appear to move.
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An angry satellite dealer interrupted HBO with a complaint about its price
In April 1986, John MacDougall used an uplink to override HBO's signal with a message signed 'Captain Midnight.' He was protesting the scrambling of satellite…
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The calculator designed in a concentration camp
Curt Herzstark finalized the blueprints for the Curta while imprisoned at Buchenwald; the SS allowed him to work on it as a possible gift for Hitler. He…
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The Atari console that turned music into shapes
In 1977, Atari released a wood-paneled console that turned stereo audio into geometric shapes on a TV screen. The Video Music was aimed at music fans rather…
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Hellschreiber hacked bad radio signals with dot matrix
Rather than send character codes that static could garble, it transmitted letters as columns of pixels encoded in audio tones. The receiver printed a…
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Rat Park tested how surroundings affect drug use
Researchers compared isolated rats with rats living together in a larger enclosure, measuring their consumption of morphine solution. Under the study's choice…
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