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Today I Learned that the # symbol isn’t officially called the hashtag or the pound sign. It’s technical name is octothorpe. The “octo” means “eight” referring to how many points it has.

Read more time.com

via reddit.com

BxMD TIL Arnold Schwarzenegger won his first bodybuilding competition at age 17, after sneaking off his army base for the night. Upon returning with the trophy, he was caught and jailed for a year.
m1Lvy TIL A parasite of the Greenland shark is Ommatokoita elongata. This copepod attaches itself to the eyes of the shark causing lesions which cause impaired vision and even blindness. Usually, only one eye is affected by a single copepod. Some believe that the copepod attracts prey for the shark.
oBWXY TIL smartwatches measures blood preassure by emitting light to the skin and reading how much light is reflected back; as the heart pumps blood, it causes a variation in blood volume on the skin and can be detected by change in light absorption, a not-so-new technology called photoplethysmogram.
mxBDE TIL That my country Canada interred over 90% of Japanese Canadians residing in British Columbia during WWII. The majority of these 22,000 people were Canadian by birth. Measures were paid for in part by seizure and sale of the property of those interred and were not lifted until 1949.
PRXO TIL as part of their bid for the 2022 world cup, Japan proposed filming the matches with 200 HD cameras and then project these as life-size holograms in other stadiums around the world.