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TIL physicist Bernard Waldman witnessed the bombing of Hiroshima, as a camera operator on the observation aircraft. He was equipped with a special high-speed movie camera with six seconds of film to record the blast. Unfortunately, Waldman forgot to open the camera shutter, and no film was exposed.

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D1Gle TIL of Robert Maxwell, media mogul, British MP, fraudster, and suspected spy. After his naked body was found in the ocean, it was revealed that he had stolen hundreds of millions of pounds from his companies’ pension funds. He is also the father of Ghislaine Maxwell.
b6m80 TIL that Stephen Baldwin has a tattoo of the initials "HM" for Hannah Montana after making a pact with Miley Cyrus that he would be allowed to cameo on the show if he had the initials tattooed on him. He was never given the opportunity to be on the show and has said he regrets getting the tattoo.
vPYQr TIL Many formulas exist for Wind Chill. The current one was only implemented in 2001. It is calculated for a bare face, facing the wind, while walking into it at 5.0 km/h/3.1 mph. It corrects the officially measured wind speed to the wind speed at face height, assuming the person is in an open field
l7YLN TIL After failing his entrance examinations at the University of Zurich, Einstein settled in Bern, where he wrote his post-doctoral thesis and published five works that changed the world view of physics forever
Jpj8 TIL Guinness could really be good for you: A pint of Guinness may work as well as a low dose aspirin to prevent heart clots that raise the risk of heart attacks.