conductor-to-conductor spacing
71Power dividers and directional couplers — A 10 dB 1.7–2.2 GHz directional coupler. From left to right: input, coupled, isolated (terminated with a load), and transmitted port …
72NEMA connector — Twist lock connector redirects here. For the device used in intermodal shipping, see Twistlock. Ungrounded and grounded power plugs …
73Charles H. Roe — A November 1978 built Roe body on a Leyland Atlantean AN68A/1R, new to South Yorkshire PTE as their 1633, pictured in Manchester with Citybus Charles H. Roe Ltd. was a Yorkshire coachbuilding company. It was for most of its life based at… …
74Classical and quantum conductivity — Classical and quantum mechanical views of conductivity have both described the movements of electrons in a metallic solid. The free electron gas that is present in metallic solids is the reason for an important property of all metals:… …
75Saint Petersburg — Leningrad redirects here. For other uses, see Leningrad (disambiguation). This article is about the city in Russia. For other uses, see Saint Petersburg (disambiguation). Saint Petersburg Санкт Петербург (Russian)   Federal …
76electromagnetic radiation — Physics. radiation consisting of electromagnetic waves, including radio waves, infrared, visible light, ultraviolet, x rays, and gamma rays. [1950 55] * * * Energy propagated through free space or through a material medium in the form of… …
77fullerene — /fool euh reen /, n. any of a class of molecules of carbon having a roughly spherical shape. [1985 90; after R. Buckminster FULLER; see ENE] * * * Any of a class of all carbon molecules whose atoms are arranged in closed hollow shells. Allotropes …
78railroad — /rayl rohd /, n. 1. a permanent road laid with rails, commonly in one or more pairs of continuous lines forming a track or tracks, on which locomotives and cars are run for the transportation of passengers, freight, and mail. 2. an entire system… …
79wood — wood1 woodless, adj. /wood/, n. 1. the hard, fibrous substance composing most of the stem and branches of a tree or shrub, and lying beneath the bark; the xylem. 2. the trunks or main stems of trees as suitable for architectural and other… …
80Wood — /wood/, n. 1. Grant, 1892 1942, U.S. painter. 2. Leonard, 1860 1927, U.S. military doctor and political administrator. * * * I Hard, fibrous material formed by the accumulation of secondary xylem produced by the vascular cambium. It is the… …
