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Hace 2 días · 1901: The first motorized cleaner using suction, a powered "vacuum cleaner", is patented independently by Hubert Cecil Booth and David T. Kenney. [428] 1903: The first successful gas turbine is invented by Ægidius Elling .
Hace 4 días · Romania is the largest country in Southeastern Europe and the twelfth-largest in Europe, having an area of 238,397 square kilometres (92,046 sq mi). [243] : 17 It lies between latitudes 43° and 49° N and longitudes 20° and 30° E. The terrain is distributed roughly equally between mountains, hills, and plains.
Hace 3 días · 1899–1901: Boxer Rebellion in China is suppressed by the Eight-Nation Alliance. 1899–1902: Thousand Days' War in Colombia breaks out between the "Liberales" and "Conservadores", culminating with the loss of Panama in 1903. 1899–1902: Second Boer War begins. 1899–1902: Philippine–American War begins. Science and technology
Hace 1 día · Website. www .buffalony .gov. Buffalo is a city in the U.S. state of New York and the county seat of Erie County. It lies in Western New York at the eastern end of Lake Erie, at the head of the Niagara River on the Canada–United States border. With a population of 278,349 according to the 2020 census, Buffalo is the second-most populous city ...
Hace 1 día · Reprinted in 1922 and 1923. Also released in 1922 and 1924 under the imprint Methuen (London). Translations are found in publications #166, 167, and 179, whereas the German text is listed as publication #156. A second edition was also released; see publication #297 .
Hace 3 días · In physics, Planck's law (also Planck radiation law [1] : 1305 ) describes the spectral density of electromagnetic radiation emitted by a black body in thermal equilibrium at a given temperature T, when there is no net flow of matter or energy between the body and its environment. [2]
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