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Nobel obtained patents for his inventions in England on 7 May 1867 and in Sweden on 19 October 1867. [3] After its introduction, dynamite rapidly gained wide-scale use as a safe alternative to black powder and nitroglycerin. Nobel tightly controlled the patents, and unlicensed duplicating companies were quickly shut down.
The US Code of Federal Regulations defines an accident as "an occurrence associated with the operation of an aircraft, which takes place between the time any person boards the aircraft with the intention of flight and all such persons have disembarked, and in which any person suffers death or serious injury, or in which the aircraft receives substantial damage;" an incident as "an occurrence ...
The Tsar Bomba is the single most physically powerful device ever deployed on Earth, the most powerful nuclear bomb tested and the largest human-made explosion in history. [64] For comparison, the largest weapon ever produced by the US, the now-decommissioned B41 , had a predicted maximum yield of 25 Mt (100 PJ).
Thomas Midgley Jr. (May 18, 1889 – November 2, 1944) was an American mechanical and chemical engineer.He played a major role in developing leaded gasoline (tetraethyl lead) and some of the first chlorofluorocarbons (CFCs), better known in the United States by the brand name Freon; both products were later banned from common use due to their harmful impact on human health and the environment.
Napalm was used most notably at the beginning of the Battle of Outpost Harry. [ 23 ] [ 24 ] Eighth Army chemical officer Donald Bode reported that, on an "average good day", UN pilots used 260,000 liters (70,000 US gal; 58,000 imp gal) of napalm, with approximately 230,000 liters (60,000 US gal; 50,000 imp gal) of this thrown by US forces. [ 10 ]
Non-commercial aviation is remarkably dangerous, with hundreds of accidents occurring each year. There were 1,248 accidents in 2009, 1,236, and in 2010, and 937 so far this year. In total, 1,112 ...
Vyacheslav Molotov, 1945. The name "Molotov cocktail" (Finnish: Molotovin cocktail) was coined by the Finns during the Winter War in 1939.[10] [11] [12] The name was a pejorative reference to Soviet foreign minister Vyacheslav Molotov, who was one of the architects of the Molotov–Ribbentrop Pact on the eve of World War II.
One of the most popular and simple symbols of Christmas decorations has a surprising history. Tinsel was first invented in the 1600s but it wasn't cheap. Back then it was made from strands of ...