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fog

(Encyclopedia)fog, aggregation of water droplets or ice crystals immediately above the surface of the earth (i.e., a cloud near the ground). A light or thin fog is usually called a mist. Fog may occur when the mois...

electrostatics

(Encyclopedia)electrostatics, study of phenomena associated with charged bodies at rest (see charge; electricity). A charged body has an excess of positive or negative charges, a condition usually brought about by ...

solution

(Encyclopedia)CE5 Solubility curves solution, in chemistry, homogeneous mixture of two or more substances. The dissolving medium is called the solvent, and the dissolved material is called the solute. A solutio...

conduction

(Encyclopedia)conduction, transfer of heat or electricity through a substance, resulting from a difference in temperature between different parts of the substance, in the case of heat, or from a difference in elect...

Ciliophora

(Encyclopedia)Ciliophora sĭlˌē-ŏfˈərə [key], phylum in the kingdom Protista consisting of the ciliates, or ciliophores, complex freshwater or saltwater protozoans that swim by the coordinated beating of thei...

Joliot-Curie

(Encyclopedia)Joliot-Curie ērĕnˈ [key], 1897–1956, daughter of Pierre and Marie Curie, were married in 1926. Both were assistants at the Radium Institute in Paris, of which Irène, succeeding her mother, was d...

abacus, in mathematics

(Encyclopedia)CE5 Chinese abacus: Numbers are represented by moving beads to the central crossbar. abacus ăbˈəkəs, əbăkˈ– [key], in mathematics, simple device for performing arithmetic calculations. Th...

group

(Encyclopedia)group, in mathematics, system consisting of a set of elements and a binary operation a∘b defined for combining two elements such that the following requirements are satisfied: (1) The set is closed ...

liquid crystal

(Encyclopedia)liquid crystal, liquid whose component particles, atoms or molecules, tend to arrange themselves with a degree of order far exceeding that found in ordinary liquids and approaching that of solid cryst...