› added 12 years ago

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TIL that the summer of 1816 is called “the year without summer” due several compounding earth events lowering Earth’s temperature and eliminating summer that year.

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aQMZ TIL all of our terrestrial radio and television broadcasts become indistinguishable from background noise at only a few light years away from the Earth thanks to the inverse square law
m1aEv TIL frogs can see individual photons, the smallest possible particles of light. Even the faintest sources like distant stars appear as individual points of light not as a continuous stream but as separate flashes. To test it single photons were fired at photoreceptor cells triggering a nerve impulse
jvla TIL that George Washington did not have any wooden teeth, and that he had a set of REAL teeth from slaves
P1gGZ TIL in WW2, the US made 1.5 million Purple Heart medals because so many casualties were expected from the invasion of Japan. As this never happened, they are still using that stockpile of medals.
jNd4R TIL The Dodge La Femme, 1955, was the first car made exclusively for women and it included purse, boots, raincoat and umbrella.