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kilogram

(Encyclopedia)kilogram, abbr. kg, fundamental unit of mass in the metric system, defined as the mass of the International Prototype Kilogram, a platinum-iridium cylinder kept at Sèvres, France, near Paris. Copies ...

servomechanism

(Encyclopedia)servomechanism, automatic device for the control of a large power output by means of a small power input or for maintaining correct operating conditions in a mechanism. It is a type of feedback contro...

Camp, Walter Chauncey

(Encyclopedia)Camp, Walter Chauncey, 1859–1925, American athlete, football coach, administrator, b. New Britain, Conn. In his three years as captain at Yale Univ. in the 1880s, Camp shaped the rules that transfor...

dimension, in physics

(Encyclopedia)dimension, in physics, an expression of the character of a derived quantity in relation to fundamental quantities, without regard for its numerical value. In any system of measurement, such as the met...

Kellogg, Edward

(Encyclopedia)Kellogg, Edward, 1790–1858, American economist, b. Norwalk, Conn. He advocated a financial scheme to abolish interest, which was often usurious at the time he wrote. Kellogg devised a system of fina...

respiration

(Encyclopedia)CE5 Respiratory system respiration, process by which an organism exchanges gases with its environment. The term now refers to the overall process by which oxygen is abstracted from air and is tran...

feudalism

(Encyclopedia)feudalism fyo͞oˈdəlĭzəm [key], form of political and social organization typical of Western Europe from the dissolution of Charlemagne's empire to the rise of the absolute monarchies. The term fe...

entropy

(Encyclopedia)entropy ĕnˈtrəpē [key], quantity specifying the amount of disorder or randomness in a system bearing energy or information. Originally defined in thermodynamics in terms of heat and temperature, e...

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 concentration of components...

fluidics

(Encyclopedia)fluidics, branch of engineering and technology concerned with the development of equivalents of various electronic circuits using movements of fluid rather than movements of electric charge. The basic...