› added 4 years ago

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TIL With the introduction of small portable solar scopes, hydrogen alpha and calcium filters has now become very popular. H-alpha is in the red end of the visible solar spectrum and it allows one to see solar prominences, filaments, plages and occasional flares on the Sun

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WMdd TIL it is impossible for modern computers to simulate a crumpled ball of paper.
69oMm TIL of the Pierce Arrow armoured anti aircraft lorry deployed by the Royal Marine Artillery in the First World War. Used from 1915 to 1917, it shot down over twenty enemy aircraft, having take out the first of these within two days of deployment.
gNxD TIL of the Asian brown cloud, a layer of air pollution that appears over South Asia and the Indian Ocean every year between January and March when there is no rain to wash pollutants from the air. Nearly two million people die each year, in India alone, from conditions related to the brown cloud.
1vaW TIL it only takes a gallon of fuel to move 1 ton of material 500 miles by rail.
rRGbe TIL Ernesto Miranda, the man behind the ruling that forces cops to read your "Miranda" Rights, was later killed in a bar fight. The murderer was read his miranda rights, did not talk to the cops, and got away with no charges.