› added 8 months ago

85

TIL The first commercial graphing calculator was introduced by Casio in 1985 for $75. By 1986 it had been adopted by a program in Ohio schools, and other states soon followed

Read more americanhistory.si.edu

via reddit.com

7rjWP TIL waffle cones, reclining chairs, and playgrounds were all popularized in America as a result of the tuberculosis epidemic of the early 1900s.
BrPbe TIL Although the Red Baron was their enemy the British respect for him was such that upon his death he was buried with full military honours by No.3 Squadron of the Australian Flying Corps who had recovered his body in Northern France.
1aBO TIL that implanting a magnet in your finger gives you a “sixth sense” - the ability to sense magnetic fields.
mN5O TIL that if humans were capable of hearing frequencies lower than 20 Hz, we would hear our muscles moving.
E1PbP TIL About a fire at North Orange Blossom Trail warehouse in 1991. It burned so hot they couldn't put it out with water because it separated the hydrogen and oxygen.