longitudinal instability
71Générateur MHD — Un générateur MHD (magnétohydrodynamique) est un convertisseur MHD qui transforme l énergie cinétique d un fluide conducteur directement en électricité. Le principe de base est fondamentalement le même que pour n importe quel générateur… …
72chile — /chil ee/, n. chili. * * * Chile Introduction Chile Background: A three year old Marxist government was overthrown in 1973 by a dictatorial military regime led by Augusto PINOCHET, who ruled until a freely elected president was installed in 1990 …
73Chile — Chilean, adj., n. /chil ee/; Sp. /chee le/, n. a republic in SW South America, on the Pacific Coast. 14,508,168; 286,396 sq. mi. (741,765 sq. km). Cap.: Santiago. * * * Chile Introduction Chile Background: A three year old Marxist government was… …
74Colloidal crystal — A colloidal crystal is an ordered array of colloid particles, analogous to a standard crystal whose repeating subunits are atoms or molecules.[1] A natural example of this phenomenon can be found in the gem opal, where spheres of silica assume a… …
75Tacoma Narrows Bridge (1940) — This article is about the first Tacoma Narrows Bridge, which collapsed in 1940. For the article on the current bridges, see Tacoma Narrows Bridge. Tacoma Narrows Bridge The original Tacoma Narrows Bridge roadway twisted and vibrated violently… …
76Exact sciences (The) in Hellenistic times: texts and issues — The exact sciences in Hellenistic times: Texts and issues1 Alan C.Bowen Modern scholars often rely on the history of Greco Latin science2 as a backdrop and support for interpreting past philosophical thought. Their warrant is the practice… …
77Iridium — (pronEng|ɪˈrɪdiəm) is a chemical element that has the symbol Ir and atomic number 77. A very hard, brittle, silvery white transition metal of the platinum family, iridium is the second densest element and is the most corrosion resistant metal,… …
78Plate tectonics — The tectonic plates of the world were mapped in the second half of the 20th century …
79Supermarine Spitfire — Infobox Aircraft name =Spitfire type =Fighter manufacturer =Supermarine caption =The distinctive silhouette of a typical Spitfire shows elliptical wings. (P7350, a Mk IIa, was first delivered to 266 Squadron on 6 September 1940.) designer =R. J.… …
80Chronic fatigue syndrome — This article is about the medical condition Chronic fatigue syndrome. For the symptom chronic fatigue, see Fatigue (medical). Chronic fatigue syndrome Classification and external resources ICD 10 G93.3 ICD 9 …
