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bronze, in metallurgy

(Encyclopedia)bronze, in metallurgy, alloy of copper, tin, zinc, phosphorus, and sometimes small amounts of other elements. Bronzes are harder than brasses. Most are produced by melting the copper and adding the de...

illumination, in physics

(Encyclopedia)illumination, in physics: see lighting; photometry. ...

pitch, in aviation

(Encyclopedia)pitch, in aviation: see airplane; airfoil. ...

minister, in diplomacy

(Encyclopedia)minister, in diplomacy: see diplomatic service; extraterritoriality. ...

sublimation, in psychology

(Encyclopedia)sublimation, in psychology: see defense mechanism; psychoanalysis. ...

period, in physics

(Encyclopedia)period, in physics: see harmonic motion; wave. ...

may, in botany

(Encyclopedia)may, name for several plants; in England, particularly the hawthorn. See also mayflower. ...

quadrant, in technology

(Encyclopedia)quadrant, in technology, angle-measuring device based on a scale of 90°. It is sometimes confused with the sextant, a similar instrument based on a scale of 60°. The quadrant is rarely used today. ...

scale, in cartography

(Encyclopedia)scale, in cartography, the ratio of the distance between two points on a map to the real distance between the two corresponding points portrayed. The scale may be expressed in three ways: numerically,...

nimbus, in meteorology

(Encyclopedia)nimbus, in meteorology, low, dark, formless cloud covering the entire sky, from which rain or snow is steadily falling. The term is usually applied to any cloud from which rain descends. Modifications...