› added 5 years ago

489

TIL about the world's roundest object intended for re-defining exactly one kilogram by counting the number of silicon-28 atoms that forms it and redefining the Avogadro's number

Read more oldnewsclub.com

via reddit.com

l7Nyr TIL Slade's Noddy Holder was asked to join AC/DC after Bon Scott's death in 1980
49Gw TIL that the gender neutral term for a niece/nephew is a nibling, just like the gender neutral term for a brother/sister is a sibling.
kOlYW TIL Though the royal figures on modern playing cards do not represent actual people, names were assigned to them: Charlemagne (hearts), David (spades), Caesar (diamonds), and Alexander (clubs). The names of the queens — Judith or Judic (hearts), Pallas (spades), Rachel (diamonds), and Argine (clubs)
69Ag8 TIL that mosasaurs, marine animals contemporary with dinosaurs that went extinct after Cretaceous period, are most closely related to snakes
rREao TIL: Despite Area 51 operating as early as 1955, it was only publicly acknowledged by the CIA in 2013.