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dynamite : ウィキペディア英語版
dynamite


Dynamite is an explosive material based on nitroglycerin, using diatomaceous earth (AmE: kieselgur; BrE: kieselguhr), or another adsorbent substance such as powdered shells or clay. Dynamites using organic materials as sorbents such as sawdust are less stable and such use has been generally discontinued. Dynamite was invented by the Swedish chemist and engineer Alfred Nobel in Geesthacht, Germany, and patented in 1867.
==Invention, purpose, and use==

Dynamite was invented by Alfred Nobel and was the first safely manageable explosive stronger than black powder. Nobel obtained patents for his invention in England on May 7, 1867, in Sweden on October 19, 1867.〔Schück & Sohlman (1929), p. 101.〕 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. However, a few American businessmen got around the patent by using a slightly different formula.〔US Patent 234489 issued to Morse 16 November 1880〕
Nobel originally sold dynamite as ''"Nobel's Blasting Powder"'' but decided to change the name to dynamite, from the Ancient Greek word δύναμις ''dýnamis'', meaning "power".〔"dynamite." The American Heritage® Dictionary of the English Language, Fourth Edition. 2003. Houghton Mifflin Company 19 March 2013 http://www.thefreedictionary.com/dynamite〕〔"dynamite." Collins English Dictionary – Complete and Unabridged. 1991, 1994, 1998, 2000, 2003. HarperCollins Publishers 19 March 2013 http://www.thefreedictionary.com/dynamite〕
An industrialist, engineer, and inventor, Alfred Nobel's father, Immanuel Nobel, built bridges and buildings in Stockholm. His construction work inspired him to research new methods of blasting rock. Immanuel's work with explosives later on inspired Alfred to make explosives safer and more effective. Today Dynamite is mainly used in the mining, quarrying, construction, and demolition industries. Dynamite is still the product of choice for trenching applications, and as a cost-effective alternative to cast boosters. Dynamite is occasionally used as an initiator or booster for AN and ANFO explosive charges.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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