› added 4 years ago

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Today I learned that testing to qualify an n95 is done by putting a persons head in a hood and then spraying something sweet or bitter into the hood and using the senses of smell and taste to verify a proper seal.

Read more osha.gov

via reddit.com

LOmd TIL in 1912 a group of investors were sold a 480 inch instead of a 480 foot skyscraper for $200,000 because nobody bothered to read the plans properly.
N7Le1 TIL Interstellar, the film, contributed to our scientific understanding of black holes. When they ran a specially designed engine for producing CGI, they saw what they thought was a graphic bug. What it was, however, was imagery of what black holes actually look like.
OoYra TIL Pink Floyd's Dark Side of the Moon album was on the Billboard charts for a total of 741 consecutive weeks from 1973 to 1988
4k085 TIL, immediately after WWII, the U.S Government took 1,600 Nazi scientists back to the U.S. This secret operation was called “Operation Paperclip”. Many of these ex-Nazis scientists went to work for NASA. The most famous ex-Nazi scientist was Wernher von Braun.
b9NOp TIL that Ben Franklin was involved in the first fraternal hazing death in America. In 1737 a man died after flaming liquid was thrown on him in a mock initiation at the Philadelphia Masonic Temple. Franklin, a Freemason, was a witness, and the perpetrator was found guilty of manslaughter and branded