› added 2 years ago

85

TIL Astronomers measure sunspot areas using a square grid by placing the grid over the photo of a sunspot and count the number of squares covering it. Areas can also be determined using graphical charts and software

Read more beatlyzer.com

via beatlyzer.com

v1dYK TIL 'Plankton' is not a single species, but is instead an umbrella term used to refer to any lifeform that drifts with the ocean currents, including microorganisms like bacteria and algae, as well as larger creatures like jellyfish.
KYvjR TIL Charles Lindbergh was involved in the three largest “media events” to occur between WWI and WWII: his trans-Atlantic flight; his son’s kidnapping/ransom; and the Sand Cave incident.
rNm4w TIL "The Wire" (2002 - 2008), one of the most critically acclaimed TV shows of all time, won exactly zero Emmy awards.
grwM9 TIL seven of the thirty-nine signers of the US Constitution were not native to The Thirteen Colonies: Pierce Butler, Thomas Fitzsimons, James McHenry, and William Paterson were born in Ireland, Robert Morris in England, James Wilson in Scotland, and Alexander Hamilton in the West Indies.
VMb8k TIL that the original Trefoil ("Radioactive") symbol was replaced by a red, more grotesque version including a skull and crossbones (ISO 21482), after 3 people died when they carried and dismantled a Cobalt-60 radiation source, not recognizing the symbol.