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Bow saw, turning saw, or buck saw: a saw with a narrow blade held in tension in a frame; the blade can usually be rotated and may be toothed on both edges; it may be a rip or a crosscut, and was the preferred form of hand saw for continental European woodworkers until superseded by machines;
A 17th–century Dutch map of the Americas. The historiography of Spanish America in multiple languages is vast and has a long history. [1] [2] [3] It dates back to the early sixteenth century with multiple competing accounts of the conquest, Spaniards’ eighteenth-century attempts to discover how to reverse the decline of its empire, [4] and people of Spanish descent born in the Americas ...
Cánovas saw Spanish colonialism as more "benevolent" than that of other European colonial powers. The prevalent opinion in Spain before the war regarded the spreading of "civilization" and Christianity as Spain's main objective and contribution to the New World. The concept of cultural unity bestowed special significance on Cuba, which had ...
Albucasis invented over 200 tools for use in surgery - many still in use today. Water and weight driven mechanical clocks, by Spanish Muslim engineers sometime between 900–1200 AD. According to historian Will Durant, a watch like device was invented by Ibn Firnas.
The Slinky was invented in 1943 by American engineer Richard T. James while working in his home laboratory to invent a set of springs that could be used to support sensitive instruments on board ships and stabilize them even in rough seas. When he once accidentally knocked one of his springs off a shelf, James saw that, rather than flopping in ...
One of the best-known early rapid-fire firearms, the Gatling gun saw occasional use by the U.S. forces during the American Civil War, which was the first time it was employed in combat. It was later used in numerous military conflicts, including the Boshin War, the Anglo-Zulu War, and the assault on San Juan Hill during the Spanish–American ...
In creating this device, Michel effectively invented the worm-drive motor. Michel then tried again, using a piece of wood with a notch carved into it. In the notch, he mounted the same mechanism as the mechanical reaper, but with a 6-inch blade. This was the first electric circular saw.
A History of Latin America (9 ed.). Cengage Learning. ISBN 9781133709329. Lynch, John (2008). Simon Bolivar: A Life. Yale University Press. ISBN 9780300137705. Miller, Rory (2014). Britain and Latin America in the 19th and 20th Centuries Studies In Modern History. Routledge. ISBN 9781317870289. Rodriguez, Moises Enrique (2006).