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laser

(Encyclopedia)CE5 Ordinary light sources produce incoherent light, while a laser produces a beam of coherent light. laser [acronym for light amplification by stimulated emission of radiation], device for the cr...

Zoroastrianism

(Encyclopedia)Zoroastrianism zôˌrōăsˈtrēənĭzəm [key], religion founded by Zoroaster, but with many later accretions. The religion's priests, successors to the pre-Zoroastrian Magi, acquired great power b...

fire fighting

(Encyclopedia)fire fighting, the use of strategy, personnel, and apparatus to extinguish, to confine, or to escape from fire. Ancient Rome is known to have had a fire department consisting by the 1st cent. of app...

prisoner of war

(Encyclopedia)prisoner of war, in international law, person captured by a belligerent while fighting in the military. International law includes rules on the treatment of prisoners of war but extends protection onl...

photography, still

(Encyclopedia)photography, still, science and art of making permanent images on light-sensitive materials. See also photographic processing; motion picture photography; motion pictures. By the end of ...

dance

(Encyclopedia)dance [Old High Ger. danson=to drag, stretch], the art of precise, expressive, and graceful human movement, traditionally, but not necessarily, performed in accord with musical accompaniment. Dancing ...

Charles II, king of England, Scotland, and Ireland

(Encyclopedia)Charles II, 1630–85, king of England, Scotland, and Ireland (1660–85), eldest surviving son of Charles I and Henrietta Maria. Charles was a ruler of considerable political skill. His reign was m...

insurance

(Encyclopedia)insurance or assurance, device for indemnifying or guaranteeing an individual against loss. Reimbursement is made from a fund to which many individuals exposed to the same risk have contributed certai...

Sumerian and Babylonian art

(Encyclopedia)Sumerian and Babylonian art, works of art and architecture created by the Sumerian and Babylonian peoples of ancient Mesopotamia, civilizations which had an artistic tradition of remarkable antiquity,...

censorship

(Encyclopedia)censorship, official prohibition or restriction of any type of expression believed to threaten the political, social, or moral order. It may be imposed by governmental authority, local or national, by...