drawing cylinder
41Euclidean geometry — A Greek mathematician performing a geometric construction with a compass, from The School of Athens by Raphael. Euclidean geometry is a mathematical system attributed to the Alexandrian Greek mathematician Euclid, which he described in his… …
42Richard Trevithick — Infobox Scientist name = Richard Trevithick box width = image width = 150px caption = Richard Trevithick, by John Linnell (1792 1882) birth date = April 13, 1771 birth place = Cornwall death date = April 22, 1833 (aged 62) death place = Dartford …
43Cotton mill — A cotton mill is a factory that houses spinning and weaving machinery. Typically built between 1775 and 1930, mills spun cotton which was an important product during the Industrial Revolution. Cotton mills, and the mechanisation of the spinning… …
44Taqi al-Din — Muhammad ibn Ma ruf al Shami al Asadi (Arabic: تقي الدين محمد بن معروف الشامي السعدي, Turkish: Takiyuddin) (1526 ndash;1585) was a major Ottoman Turkish [cite journal last = Douglas | first = A. V. year =1963 title = Tenth International Congress… …
45printing — /prin ting/, n. 1. the art, process, or business of producing books, newspapers, etc., by impression from movable types, plates, etc. 2. the act of a person or thing that prints. 3. words, symbols, etc., in printed form. 4. printed material. 5.… …
46pump — pump1 pumpable, adj. pumpless, adj. pumplike, adj. /pump/, n. 1. an apparatus or machine for raising, driving, exhausting, or compressing fluids or gases by means of a piston, plunger, or set of rotating vanes. 2. Engin., Building Trades. a shore …
47Diving regulator — and Octopus Other names Demand valve Uses Reduces pressurized breathing gas to ambient pressure and delivers it to the diver Inventor Manuel Théodore Guillaumet (1838), Benoît Rouquayrol (1860) …
48Mark Six — Demographics and Culture of Hong Kong Demographics …
49Phonograph — Turntable redirects here. For other uses, see Turntable (disambiguation). Edison cylinder phonograph ca. 1899 …
50Variable displacement — is an automobile engine technology that allows the engine displacement to change, usually by deactivating cylinders, for improved fuel economy. The technology is primarily used in large, multi cylinder engines. Many automobile manufacturers have… …
