› added 12 years ago

221

TIL that a mathematically viable explanation for the complete indistinguishability of electrons is that they are all the same particle moving forward and backward through time

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xvok TIL that whenever German victories were announced on the radio in occupied Denmark, the Danish Resistance would cut into the broadcast and play “It Ain’t Necessarily So” from Porgy and Bess.
GY8jE TIL that on August 2, 1922, when Alexander Graham Bell died, every phone in North America was turned off to pay respects to him.
wYZW TIL North Korea and China signed a mutual defense agreement which says “the two nations guarantee to adopt immediately all necessary measures to oppose any country or coalition of countries that might attack either nation”
XEVxP TIL most crosswalk buttons in major cities do nothing. It is too dangerous for pedestrians to control the flow of traffic, so the buttons will only allow you to cross when there are no cars.
RPvj TIL the peace symbol is comprised of the semaphores (flag symbols) for N and D, representing the Campaign for Nuclear Disarmament