› added 5 months ago

90

TIL an artificial heart is only temporary, implanted to keep patients alive until they can receive a heart transplant

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via reddit.com

4v8a TIL that the Eiffel Tower is not painted one uniform color. The darker top gradually turns to the lighter bottom so that it is perceived to be the same color.
0wLdv TIL that the Russians succesfully developed a Plasma STEALTH cloacking device, but it had the limited purpose of screening the combat planes radar antenna, which happens to be a strong radar reflector.
gM9j4 TIL that women of the French royalty were required to give birth in public. Sometimes those births had scores of witnesses
nW7Db TIL that fish that live in frigid Arctic and Antarctic waters avoid freezing to death by producing antifreeze in their blood. This is so advantageous from an evolutionary standpoint that entirely unrelated fish species produce antifreeze proteins.
X17X TIL Firefighters use water to fight fire becasue it expands to steam and displaces oxygen, not because it cools the fire down