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(Encyclopedia) videocassette recorder (VCR), device that can record television programs or the images from a video camera on magnetic tape (see tape recorder); it can also play prerecorded tapes. A…
(Encyclopedia) limestone, sedimentary rock wholly or in large part composed of calcium carbonate. It is ordinarily white but may be colored by impurities, iron oxide making it brown, yellow, or red…
(Encyclopedia) Ruisdael or Ruysdael, Jacob vanRuisdael or Ruysdael, Jacob vanboth: yäˈkōp vän roisˈdäl [key], c.1628–1682, Dutch painter and etcher, the most celebrated of the Dutch landscape…
(Encyclopedia) gamma radiation, high-energy photons emitted as one of the three types of radiation resulting from natural radioactivity. It is the most energetic form of electromagnetic radiation,…
(Encyclopedia) calcitecalcitekălˈsīt [key], very widely distributed mineral, commonly white or colorless, but appearing in a great variety of colors owing to impurities. Chemically it is calcium…
How Did We Get Here?Theories of the UniverseEvolution vs. CreationismIt's a Matter of OpinionHow Did We Get Here?And God Said … I wanted to spend some time discussing ideas about the nature of…
