short-circuit transition
81Metamaterial antenna — This Z antenna tested at the National Institute of Standards and Technology is smaller than a standard antenna with comparable properties. Its high efficiency is derived from the Z element inside the square that acts as a metamaterial, greatly… …
82Lynn Conway — Conway in 2006 Born January 10, 1938 (1938 01 10) (age 73) White Plains, New York, U.S …
83Overhead lines — This article is about the transmission of electrical power to road and rail vehicles. For transmission of bulk electrical power to general consumers, see Electric power transmission. For powerlines mounted on pylons, see overhead power line.… …
84Liste der Telekommunikationsstandards — Liste von Standards und Richtlinien aus der Telekommunikation. Inhaltsverzeichnis 1 ETSI 1.1 Nomenklatur 1.1.1 derzeit gültige Nomenklatur 1.1.2 vorherige Nomenklatur …
85Spain — /spayn/, n. a kingdom in SW Europe. Including the Balearic and Canary islands, 39,244,195; 194,988 sq. mi. (505,019 sq. km). Cap.: Madrid. Spanish, España. * * * Spain Introduction Spain Background: Spain s powerful world empire of the 16th and… …
86Railway signalling — Not to be confused with Railway signal. A gantry of British semaphore signals seen from the cab of a steam locomotive Railway signalling is a system used to control railway traffic safely, essentially to prevent trains from colliding. Being… …
87Light switch — A light switch is a switch, most commonly used to operate electric lights, permanently connected equipment, or electrical outlets.In modern homes most lights are operated using switches set in walls, usually 6 10 inches (15 25 cm) away from a… …
88chemistry — /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… …
89literature — /lit euhr euh cheuhr, choor , li treuh /, n. 1. writings in which expression and form, in connection with ideas of permanent and universal interest, are characteristic or essential features, as poetry, novels, history, biography, and essays. 2.… …
90Life Sciences — ▪ 2009 Introduction Zoology In 2008 several zoological studies provided new insights into how species life history traits (such as the timing of reproduction or the length of life of adult individuals) are derived in part as responses to… …
