fundamental pumping
31Astrophysical maser — An astrophysical maser is a naturally occurring source of stimulated spectral line emission, typically in the microwave portion of the electromagnetic spectrum. This emission may arise in molecular clouds, comets, planetary atmospheres, stellar… …
32social science — social scientist. 1. the study of society and social behavior. 2. a science or field of study, as history, economics, etc., dealing with an aspect of society or forms of social activity. [1775 85] * * * Any discipline or branch of science that… …
33Classical guitar — A modern classical guitar from the front and side String instrument Hornbostel–Sachs classification 321.322 5 (Composite chordophone sounded by the bare fingers or …
34Water wheel — This article is about the machine for converting energy of flowing or falling water. For paddle wheels used to propel watercraft, see paddle wheel ship. For wheels used solely to lift water, see Noria. For factories or industries driven by water… …
35Sea shanty — For the song Sea Shanty by Quasi, see Featuring Birds For the album Sea Shanties by English band High Tide, see High Tide (band). Sailors sang shanties while performing shipboard labor A shanty (also spelled chantey , chanty ) is a type of work… …
36Groundwater flow equation — Used in hydrogeology, the groundwater flow equation is the mathematical relationship which is used to describe the flow of groundwater through an aquifer. The transient flow of groundwater is described by a form of the diffusion equation, similar …
37Hand pump — This article is about water and air pumps. For the beer dispensing device, see Beer engine. A rural handpump in Belgium. Hand pumps are manually operated pumps; they use human power and mechanical advantage to move fluids or air from one place to …
38Quantum mind — theories are based on the premise that quantum mechanics is necessary to fully understand the mind and brain, particularly concerning an explanation of consciousness. This approach is considered a minority opinion in science, although it does… …
39Intermittent power source — [ Erie Shores Wind Farm monthly output over a two year period] An intermittent power source is a source of electric power generation that may be uncontrollably variable or more intermittent than conventional power sources, and therefore non… …
40Шехтер, 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… …
