interaction impedance
71Electric motor — For other kinds of motors, see motor (disambiguation). For a railroad electric engine, see electric locomotive. Various electric motors. A 9 volt PP3 transistor battery is in the center foreground for size comparison. An electric motor converts… …
72DCI — may be an abbreviation for: Contents 1 Technology 2 Businesses 3 Organizations 4 Other 5 References …
73Medical imaging — This article is about imaging techniques and modalities for the human body. For imaging of animals in research, see Preclinical imaging. Medical imaging Diagnostics A CT scan image showing a ruptured abdominal aortic aneurysm …
74Alexander Frumkin — Alexander Naumovich Frumkin (Александр Наумович Фрумкин) (October 24, 1895 ndash; May 27, 1976), Russian/Soviet electrochemist, member of the Russian Academy of Sciences since 1932, founder of the Russian Journal of Electrochemistry… …
75Free space — In classical physics, free space is a concept of electromagnetic theory, corresponding to a theoretically perfect vacuum, and sometimes referred to as the vacuum of free space. The definitions of the ampere and meter SI units are based upon… …
76Superlens — A superlens, super lens or perfect lens is a lens which uses metamaterials to go beyond the diffraction limit. The diffraction limit is an inherent limitation in conventional optical devices or lenses.[1] In 2000, a type of lens was proposed,… …
77Resonant capacitor — A resonant capacitor is an acoustics and electrical engineering term for a frequency resonant inductor. Although they are actually inductors, they are called capacitors because they are capable of storing significant amounts of charge (electrons) …
78Antenne yagi-uda — Yagi Pour les articles homonymes, voir Yagi (homonymie). Antennes Yagi L antenne Yagi ou antenne Yagi Uda (du nom de ses inventeurs, Hidetsugu Yagi et Shintaro Uda) est une …
79Antenne Yagi — Pour les articles homonymes, voir Yagi. Antennes Yagi L antenne Yagi ou antenne Yagi Uda (du nom de ses inventeurs, Hidetsugu Yagi et Shintaro Uda) est une antenne à éléments pa …
80Electric charge — SI symbol: Q SI quantity dimension: Q SI unit: coulomb other units: e Derivations from other quantities: Q = I · …
