saturation state
71Clausius–Clapeyron relation — The Clausius–Clapeyron relation, named after Rudolf Clausius and Benoît Paul Émile Clapeyron, who defined it sometime after 1834, is a way of characterizing a discontinuous phase transition between two phases of matter. On a pressure–temperature… …
72Hysteresis — Not to be confused with Hysteria. Fig. 1. Electric displacement field D of a ferroelectric material as the electric field E is first decreased, then increased. The curves form a hysteresis loop. Hysteresis is the dependence of a system not… …
73Relative permeability — In multiphase flow in porous media, relative permeability is a dimensionless measure of the effective permeability of each phase. It can be viewed as an adaptation of Darcy s law to multiphase flow. For two phase flow in porous media given steady …
74magnet — /mag nit/, n. 1. a body, as a piece of iron or steel, that possesses the property of attracting certain substances, as iron. 2. a lodestone. 3. a thing or person that attracts: The park was a magnet for pickpockets and muggers. [1400 50; late ME… …
75mining — /muy ning/, n. 1. the act, process, or industry of extracting ores, coal, etc., from mines. 2. the laying of explosive mines. [1250 1300; ME: undermining (walls in an attack); see MINE2, ING1] * * * I Excavation of materials from the Earth s… …
76Psychrometrics — or psychrometry are terms used to describe the field of engineering concerned with the determination of physical and thermodynamic properties of gas vapor mixtures. The term derives from the Greek psuchron (ψυχρόν) (… …
77Lau Wai Shing — Wai Shing Lau (simplified Chinese name: 刘偉成, born July 29, 1955 in Hong Kong) is also known as Lau Wai Shing. The family name of Lau is sometimes spelled as Liu like Liu Bang (founder of the Han dynasty) or Liu Shaoqi or Liu Bocheng. This is… …
78Media and Publishing — ▪ 2007 Introduction The Frankfurt Book Fair enjoyed a record number of exhibitors, and the distribution of free newspapers surged. TV broadcasters experimented with ways of engaging their audience via the Internet; mobile TV grew; magazine… …
79Sapphire — For other uses, see Sapphire (disambiguation). Sapphire The 423 carat (85 g) blue Logan sapphire General Category Oxide mineral …
80Relative humidity — is a measurement of the amount of water vapor that exists in a gaseous mixture of air and water. Estimating relative humidity The relative humidity of an air water vapor mixture can be estimated if both the temperature ( T ) and the dew point… …
