convergent of continued fraction
51Extraterrestrial life — For fiction, see Extraterrestrials in fiction. For other uses, see Alien (disambiguation). A 1967 Soviet Union 16 kopeks postage stamp, depicting a satellite from an imagined extraterrestrial civilization …
52chemistry — /kem euh stree/, n., pl. chemistries. 1. the science that deals with the composition and properties of substances and various elementary forms of matter. Cf. element (def. 2). 2. chemical properties, reactions, phenomena, etc.: the chemistry of… …
53Chemical biology — is a scientific discipline spanning the fields of chemistry and biology that involves the application of chemical techniques and tools, often compounds produced through synthetic chemistry, to the study and manipulation of biological systems.… …
54turbine — /terr bin, buyn/, n. any of various machines having a rotor, usually with vanes or blades, driven by the pressure, momentum, or reactive thrust of a moving fluid, as steam, water, hot gases, or air, either occurring in the form of free jets or as …
55Mathematics of radio engineering — A complex valued function. The mathematics of radio engineering is a pleasant and very useful subject. This article is an attempt to provide a reasonably comprehensive summary of this almost limitless topic. While the ideas have historically… …
56Paleontology — Palaeontology redirects here. For the scientific journal, see Palaeontology (journal). Paleontology studies the entire history of life on Earth. Paleontology (pronounced /ˌpælɪɒnˈtɒlədʒi/; British: palaeontology; from Greek: παλαιός… …
57Trains in the Netherlands — The following are current and former trains in the Netherlands.Locomotivesteam locomotives* Arend: (Dutch for Eagle) was the first train in the Netherlands and pulled the first train between Amsterdam and Haarlem in 1839.* Series 600: Formerly SS …
58Tyrannosauridae — Filozoa Tyrannosaurids Temporal range: Late Cretaceous, 83–65.5 Ma …
59Neanderthal — For other uses, see Neanderthal (disambiguation). Neanderthal Temporal range: Middle to Late Pleistocene 0.6–0.03 Ma …
60White people — Whites redirects here. For other uses, see White (disambiguation). Race …
