petroleum hydrometer
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Hydrometer — Not to be confused with Hygrometer. Hydrometer from Practical Physics Schematic drawing of a hydrometer. The lower the densi … Wikipedia
API gravity — The American Petroleum Institute gravity, or API gravity, is a measure of how heavy or light a petroleum liquid is compared to water. If its API gravity is greater than 10, it is lighter and floats on water; if less than 10, it is heavier and… … Wikipedia
Car battery — A car battery is a type of rechargeable battery that supplies electric energy to an automobile [ Horst Bauer Bosch Automotive Handbook 4th Edition Robert Bosch GmbH, Stuttgart 1996 ISBN 0 8376 0333 1, pages 803 807 ] . Usually this refers to an… … Wikipedia
Porosity — 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… … Wikipedia
Плотность в градусах API — Плотность в градусах API единица измерения плотности нефти, разработанная Американским институтом нефти. Измерения в градусах API позволяют определить относительную плотность нефти по отношению к плотности воды при той же температуре. По… … Википедия
Ethanol — For other uses, see Ethanol (disambiguation). Grain alcohol redirects here. It is not to be confused with Neutral grain spirit. Ethanol … Wikipedia
Water content — Soil composition by phase: s soil (dry), v void (pores filled with water or air), w water, a air. V is volume, M is mass. Water content or moisture content is the quantity of water contained in a material, such as soil (called soil moisture),… … Wikipedia
instrumentation — /in streuh men tay sheuhn/, n. 1. the arranging of music for instruments, esp. for an orchestra. 2. the list of instruments for which a composition is scored. 3. the use of, or work done by, instruments. 4. instrumental agency; instrumentality. 5 … Universalium
API gravity — An arbitrary scale expressing the gravity, or density, of liquid petroleum products in terms of API degrees. Relationship of the API scale to specific gravity is expressed by the equation ºAPI = (441.5/sp gr 60/60F) 131.5. ASTM D 287 is the… … Petroleum refining glossary
