› added 5 years ago

101

TIL of Jaycee Dugard, an 11-year old girl who was kidnapped in 1991 only to be found when her kidnapper walked into a school in 2009 with two young girls claiming they were his daughters. They were in fact his daughters, their mother being Jaycee; a prisoner for 18 years and a mother at 14.

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pDZ4 TIL that the United States and New Zealand are the only countries on earth which allow pharmaceutical companies to advertise to the public.
EgepV TIL that early semiconductors, before CAD, were made by hand drawing the circuit design on graph paper at an extremely enlarged scale, then cutting that design onto a film called Rubylith, which was used to create the final photolithographic mask. Repeat for all layers on a chip.
JYMQ1 TIL that night vision goggles emit a green colored viewfinder because the human eyes are more sensitive to green light as we can see more shades of green than most other colors. The green color is also less strenuous to the eyes which is why older computers had green displays.
kO7l4 TIL about Lunar lava tubes - Tunnels under the surface of the moon, kilometers long, hundreds of meters wide. Shelter from radiation and extreme temperatures. Can be used for habitation.
oB8lE TIL Bottle bills are refunds that consumers can obtain if they return select beverage containers to supermarkets or other redemption centres. The refund is only available in 10 states and ranges from 2 cents to 15 cents per container, most commonly being five cents.