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capacitance

(Encyclopedia)capacitance, in electricity, capability of a body, system, circuit, or device for storing electric charge. Capacitance is expressed as the ratio of stored charge in coulombs to the impressed potential...

Pierre

(Encyclopedia)Pierre pēr [key], city (1990 pop. 12,906), state capital (since 1889) and seat of Hughes co., central S.Dak., on the east bank of the Missouri River, opposite Fort Pierre; inc. 1883. Its economy is c...

Caen

(Encyclopedia)Caen käN [key], city, capital of Calvados dept., N France, in Normandy, on the Orne River. I...

solid

(Encyclopedia)solid, one of the three commonly recognized states in which matter occurs, i.e., that state, as distinguished from liquid and gas, in which a substance has both a definite shape and a definite volume....

air conditioning

(Encyclopedia)CE5 Cross section of air conditioning unit. air conditioning, mechanical process for controlling the humidity, temperature, cleanliness, and circulation of air in buildings and rooms. Indoor air i...

Cotton, Henry

(Encyclopedia)Cotton, Henry (Thomas Henry Cotton), 1907–87, British golfer, b. Cheshire, England. Although he played as a professional at the age of 17, Cotton did not achieve international recognition until he w...

Sikh Wars

(Encyclopedia)Sikh Wars (1845–49), two conflicts preceding the British annexation of the Punjab. By a treaty with the British in 1809, the Sikh ruler of the Punjab, Ranjit Singh, had accepted the Sutlej River as ...

census

(Encyclopedia)census, periodic official count of the number of persons and their condition and of the resources of a country. In ancient times, among the Jews and Romans, such enumeration was mainly for taxation an...

episome

(Encyclopedia)episome ĕpˈĭsōm [key], unit of genetic material composed of a series of genes that sometimes has an independent existence in a host cell and at other times is integrated into a chromosome of the c...

flux, magnetic

(Encyclopedia)flux, magnetic, in physics, term used to describe the total amount of magnetic field in a given region. The term flux was chosen because the power of a magnet seems to “flow” out of the magnet at ...