› added 5 years ago

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TIL “Dark side of the Moon” does not actually mean “dark”. We only see one side of the Moon from Earth and never see the other (tidal locking), but both sides have 2 weeks of sunlight followed by 2 weeks of night. Moon’s Dark/far side looks quite different than the side we see from Earth.

Read more nasa.gov

via reddit.com

lo17G TIL Two German brothers Adi and Rudolf Dassler, worked together during WWII making sports shoes. After a huge fall out between the two, they split up and started their own rivalry firms - Adidas and Puma.
95YD TIL The SR-71 did more than just take pictures. It could aim its radar 45 degrees to the side, map the terrain like side scan sonar… intercept enemy comm and radar signals, record its entire flight path with infrared cameras… to prove to countries that it didnt violate their airspace.
WJ1N TIL that women are the main proponents of “slut-shaming”; employing it as an aggressive strategy to deter their more attractive female rivals.
6E96X You’re in luck. For their senior project, two Cornell University computer-engineering whizzes recently built a machine that does just that. After learning in class how breathalyzers work, Robert Clain and Miguel Salas assembled a fart detector from a sensitive hydrogen sulfide monitor, a thermometer and a microphone and wrote the software that would rate the emission. A “slight perturbance in the air” near the detector sets it to work measuring the three pillars of fart quality: stench, temperature and sound. Temperature, Clain explains, is critical.
ANR0d TIL most plastics are more expensive than gasoline by weight . The average consumer only thinks gas is expensive compared to plastic because they buy more gas than plastic.