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Heron's fountain is a hydraulic machine invented by the 1st century AD inventor, mathematician, and physicist Heron (or Hero) of Alexandria . [1] Heron studied the pressure of air and steam, described the first steam engine, and built toys that would spurt water, one of them known as Heron's fountain. Various versions of Heron's fountain are ...
October 25, 1971. (1971-10-25) –. April 15, 1977. (1977-04-15) The Electric Company is an American educational children's television series produced by the Children's Television Workshop (CTW, now known as Sesame Workshop). It was co-created by Paul Dooley, Joan Ganz Cooney, and Lloyd Morrisett. The series aired on PBS for 780 episodes over ...
Pyrotechnics is the science and craft of creating such things as fireworks, safety matches, oxygen candles, explosive bolts and other fasteners, parts of automotive airbags, as well as gas-pressure blasting in mining, quarrying, and demolition. This trade relies upon self-contained and self-sustained exothermic chemical reactions to make heat ...
Märchenbrunnen. The Märchenbrunnen (simply the "fountain of fairy tales") is located in the Volkspark Friedrichshain in Berlin. [1] In 1893 the authorities of Berlin issued the artistic entrance to the National Park Friedrichshain. The fountain of fairy tales was commissioned by the National Park and later designed by Ludwig Hoffmann. [2]
A fountain pen is a writing instrument that uses a metal nib to apply water-based ink, or special pigment ink—suitable for fountain pens—to paper. It is distinguished from earlier dip pens by using an internal reservoir to hold ink, eliminating the need to repeatedly dip the pen in an inkwell during use. The pen draws ink from the reservoir ...
The fountain sculpture depicts a seated ogre devouring a naked child. Placed at his side is a bag containing more children. Because the ogre is wearing a pointed hat resembling a Jewish one, [1] it has been speculated [2] about the possibility of the ogre being the depiction of a Jew as an expression of blood libel against Jews.