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lake, in dyeing

(Encyclopedia)lake, in dyeing, an insoluble pigment formed by the reaction between an organic dye and a mordant. The color of a lake depends upon the mordant as well as the dye used. Generally, lakes are not as col...

naturalism, in art

(Encyclopedia)naturalism, in art, a tendency toward strict adherence to the physical appearance of nature and rejection of ideal forms. Artists as diverse as Velázquez, J. F. Millet, and Monet, have followed natur...

field, in algebra

(Encyclopedia)field, in algebra, set of elements (usually numbers) that may be combined under the operations of addition and multiplication so that it constitutes an additive group, the nonzero elements form a mult...

root, in mathematics

(Encyclopedia)root, in mathematics, number or quantity r for which an equation f(r)=0 holds true, where f is some function. If f is a polynomial, r is called a root of f; for example, r=3 and r=−4 are roots of th...

ornament, in architecture

(Encyclopedia)ornament, in architecture, decorative detail enhancing structures. Structural ornament, an integral part of the framework, includes the shaping and placement of the buttress, cornice, molding, ceiling...

transcendentalism , in philosophy

(Encyclopedia)transcendentalism, in philosophy, term descriptive of systems that hold that there are modes of being and principles of existence beyond the reach of mundane experience and manipulation. The term is n...

eclecticism, in art

(Encyclopedia)eclecticism ĭklĕkˈtĭsĭzˌəm [key], art style in which features are borrowed from various styles. It was once applied to the Carracci, who incorporated elements from the Renaissance and classical...

ball-and-socket joint

(Encyclopedia)ball-and-socket joint, in engineering, mechanical connection used between parts that must be allowed some relative angular motion in nearly all directions. As the name implies, the joint consists esse...

time , in music

(Encyclopedia)time, in music: see tempo; meter; rhythm; syncopation; metronome and musical notation. ...

ray, in physics

(Encyclopedia)ray, in physics, term denoting the straight line along which light or other form of radiation is propagated from its source. It generally refers to the line of propagation of waves but is also applied...