optical conductivity
31Mathematical descriptions of opacity — When an electromagnetic wave travels through a medium in which it gets absorbed (this is called an opaque or attenuating medium), it undergoes exponential decay as described by the Beer–Lambert law. However, there are many possible ways to… …
32Maxwell's equations — For thermodynamic relations, see Maxwell relations. Electromagnetism …
33Metallic bond — Metallic bonding is the electrostatic attractive forces between the delocalized electrons, called conduction electrons, gathered in an electron sea , and the positively charged metal ions. Understood as the sharing of free electrons among a… …
34Non-line-of-sight propagation — Non line of sight (NLOS) or near line of sight is a term used to describe radio transmission across a path that is partially obstructed, usually by a physical object in the innermost Fresnel zone. Many types of radio transmissions depend, to… …
35Porosity — or void fraction is a measure of the void (i.e., empty ) spaces in a material, and is a fraction of the volume of voids over the total volume, between 0–1, or as a percentage between 0–100%. The term is used in multiple fields including… …
36Permittivity — A dielectric medium showing orientation of charged particles creating polarization effects. Such a medium can have a higher ratio of electric flux to charge (permittivity) than empty space In electromagnetism, absolute permittivity is the measure …
37liquid — liquidly, adv. liquidness, n. /lik wid/, adj. 1. composed of molecules that move freely among themselves but do not tend to separate like those of gases; neither gaseous nor solid. 2. of, pertaining to, or consisting of liquids: a liquid diet. 3 …
38microscope — /muy kreuh skohp /, n. 1. an optical instrument having a magnifying lens or a combination of lenses for inspecting objects too small to be seen or too small to be seen distinctly and in detail by the unaided eye. 2. (cap.) Astron. the… …
39Шехтер, Роберт — Роберт Шехтер (1947, Харьков) советский и шведский физик. Родился на Украине. Окончил Харьковский университет (1965). Специальность «Теоретическая физика, физика твёрдого тела». В 1970 году в Харьковском университете защитил кандидатскую… …
40Роберт Шехтер — (1947, Харьков) советский и шведский физик. Родился на Украине. Окончил Харьковский университет (1965). Специальность «Теоретическая физика, физика твёрдого тела». В 1970 году в Харьковском университете защитил кандидатскую диссертацию на тему:… …
