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enthalpy

(Encyclopedia) enthalpyenthalpyĕnˈthălpē [key], measure of the heat content of a chemical or physical system; it is a quantity derived from the heat and work relations studied in thermodynamics. As a…

duress

(Encyclopedia) duressduressdy&oobreve;ˈrĭs, d&oobreve;ˈ–, d&oobreve;rĕsˈ [key], in law, actual or threatened violence or imprisonment, by reason of which a person is forced to enter into…

mandamus

(Encyclopedia) mandamusmandamusmăndāˈməs [key] [Lat.,=we order], in law, writ directing the performance of ministerial acts. A ministerial act is one that a person or body is obliged by law to…

Judgment Day

(Encyclopedia) Judgment Day or Doomsday, central point of early Christian, Jewish, and Islamic eschatology, sometimes called the Day of the Lord. References to it throughout the Bible are numerous.…

calculus of variations

(Encyclopedia) calculus of variations, branch of mathematics concerned with finding maximum or minimum conditions for a relationship between two or more variables that depends not only on the…

William Rufus

(Encyclopedia) William Rufus: see William II, king of England.

Le Châtelier's principle

(Encyclopedia) Le Châtelier's principle, chemical principle that states that if a system in equilibrium is disturbed by changes in determining factors, such as temperature, pressure, and…