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Hace 1 día · Romania in World War I. Romanian troops at Mărășești battlefield in 1917. The Kingdom of Romania was neutral for the first two years of World War I, entering on the side of the Allied powers from 27 August 1916 until Central Power occupation led to the Treaty of Bucharest in May 1918, before reentering the war on 10 November 1918.
Hace 3 días · Georgia Totto O'Keeffe (November 15, 1887 – March 6, 1986) was an American modernist painter and draftswoman whose career spanned seven decades and whose work remained largely independent of major art movements. Called the "Mother of American modernism", O'Keeffe gained international recognition for her meticulous paintings of natural forms ...
Hace 2 días · Sir Ernest Henry Shackleton CVO OBE FRGS FRSGS (15 February 1874 – 5 January 1922) was an Anglo-Irish Antarctic explorer who led three British expeditions to the Antarctic. He was one of the principal figures of the period known as the Heroic Age of Antarctic Exploration . Born in Kilkea, County Kildare, Ireland, Shackleton and his Anglo ...
Hace 1 día · Definition and basic properties [ edit] General relativity is a metric theory of gravitation. At its core are Einstein's equations, which describe the relation between the geometry of a four-dimensional pseudo-Riemannian manifold representing spacetime, and the energy–momentum contained in that spacetime. [46]
Hace 1 día · e. The Republic of China ( ROC ), or simply China, was a sovereign state based on mainland China from 1912 to 1949 prior to the government's relocation to Taiwan, where it continues to be based today. [f] The ROC was established on 1 January 1912 during the Xinhai Revolution against the Qing dynasty, ending the imperial history of China.
Hace 3 días · 1916: The Czochralski process, widely used for the production of single crystal silicon, is invented by Jan Czochralski. 1917: The crystal oscillator is invented by Alexander M. Nicholson using a crystal of Rochelle Salt although his priority was disputed by Walter Guyton Cady .
Hace 3 días · In early 1916, the importance of the capture of the Gheluvelt plateau for an advance further north was emphasised by Haig and the army commanders. On 14 February 1917, Colonel Norman MacMullen of GHQ proposed that the plateau be taken by a massed tank attack, reducing the need for artillery; in April a reconnaissance by Captain Giffard LeQuesne Martel found that the area was unsuitable for tanks.
