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TIL That the multi-colored lines associated with non-working TVs are known as a test card. I also learned that the test card for PAL (European, Brazilian, etc.) TVs is a different pattern, featuring multi-colored and many black-and-white lines in a circle.

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Y76xW TIL that during the 1996 Olympics, Atlanta restaurant The Varsity sold a pin featuring onion rings arranged in the shape of the Olympic rings. The International OIympic Committee felt this was trademark infringement and had the pins banned and confiscated.
D1J7r Today I learned how to speak Enchanting Table. The Standard Galactic Alphabet, or SGA, was featured in the game 'Commander Keen'. It can be easily translated and is included in the Minecraft 2013 Annual
0dXd5 TIL Rhode Island, despite being the first colony to renounce the British Crown, never sent representatives to draft the Constitution and was the last of the thirteen colonies to ratify the Constitution.
W775B TIL that the Capitol was designed to have George Washington's tomb on public display. Both houses passed bills saying he should be buried there, and his wife consented, but due to various delays it took until 1830 for it to be viable. After an attempted theft of his head, the project was cancelled.
LkDXr TIL: That none of the three "suicide squad divers" in Chernobyl died from acute radiation syndrome (ARS). As of 2015, it was reported that both Alexei Ananenko and Valeri Bespalov were alive and well. Boris Baranov, passed away in 2005 of a heart attack.