› added 1 year ago

231

TIL Neil Armstrong was filmed as he stepped on the moon with a $2.3 million upside-down camera. Westinghouse built for Apollo 11 a special model that the astronaut deployed by pulling a handle near the ladder he climbed down onto the lunar surface. NASA inverted the image for the TV audience.

Read more airandspace.si.edu

via reddit.com

Rx64 TIL that in 1972 a scientist created a ‘Rat Utopia’ as a social experiment to study population density, and within two years the population dived Into a irreversible decline unto extinction.
Qopk TIL The sudden startled jolt awake sometimes experienced when on the verge of sleeping is known as a hypnic jerk, and is likely a vestigial reflex selected to help primates avoid falling while resting or asleep in trees.
AD04g TIL that when Plato gave the definition of man as “featherless bipeds,” Diogenes plucked a chicken and brought it into Plato’s Academy, saying, “Behold! I’ve brought you a man,” and so the Academy added “with broad flat nails” to the definition.
ADLAl High-speed video imaging colored to reveal the two main components of a sneeze show a shower of larger droplets, green, whose trajectories can extend up to two meters from the person sneezing, yellow, and a cloud, red, made of a mixture of smaller droplets suspended in moist, warm gas. Pathogen-bearing droplets can be suspended in the air for not just seconds, but minutes, and can travel up to 27 feet.
R5vNa TIL that rabbits don't really eat carrots all the time and this is a myth. Carrots are too high in sugar and should only be given as an occasional treat. Rabbits mainly eat hay and/or grass, some leafy greens and a small, measured amount of pellets.