Drip, Drip Water Clocks
Engineering / Breakthroughs
Water clocks were among the earliest timekeepers that didn't depend on the observation of celestial bodies. One of the oldest was found in the tomb of the Egyptian pharaoh Amenhotep I, buried around 1 continue reading this fact
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Big Boom
Engineering / Flight
They sound like thunder, but they're not. They're sonic booms, concentrated blasts of sound waves created as vehicles travel faster than the speed of sound. To understand how the booms are created, lo continue reading this fact
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Infrared Headphones
Engineering / Breakthroughs
Infrared headphones use infrared light to carry an information signal from a transmitter to a receiver. Sounds simple enough, but the actual process is very complicated. The human ear gathers sound as continue reading this fact
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