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electromagnet
(Encyclopedia) CE5 Electromagnet electromagnet, device in which magnetism is produced by an electric current. Any electric current produces a magnetic field, but the field near an ordinary…californium
(Encyclopedia) californiumcaliforniumkălˈĭfôrˌnēəm [key] [from California], artificially produced, radioactive metallic chemical element; symbol Cf; at. no. 98; mass no. of most stable isotope 251; m…Archimedes' principle
(Encyclopedia) Archimedes' principle, principle that states that a body immersed in a fluid is buoyed up by a force equal to the weight of the displaced fluid. The principle applies to both floating…gyroscope
(Encyclopedia) CE5 Three-frame gyroscope gyroscopegyroscopejīˈrəskōpˌ [key], symmetrical mass, usually a wheel, mounted so that it can spin about an axis in any direction. When spinning, the…Atomic Energy Commission
(Encyclopedia) Atomic Energy Commission (AEC), former U.S. government commission created by the Atomic Energy Act of 1946 and charged with the development and control of the U.S. atomic energy…marine engine
(Encyclopedia) marine engine, machine for the propulsion of watercraft. The earliest marine power plants, reciprocating steam engines, were used almost exclusively until the early 1900s. In later…Piaget, Jean
(Encyclopedia) Piaget, JeanPiaget, JeanzhäNpyäˈjā [key], 1896–1980, Swiss psychologist, known for his research in developmental psychology. After receiving a degree in zoology from the Univ. of…fullerene
(Encyclopedia) fullerene, any of a class of carbon molecules in which the carbon atoms are arranged into 12 pentagonal faces and 2 or more hexagonal faces to form a hollow sphere, cylinder, or…Geiger counter
(Encyclopedia) Geiger counter or Geiger-Müller (G-M) counterGeiger countergīˈgər-mŭlˈər, –my&oomacr;ˈlər [key], instrument for the detection and quantitative determination of ionizing radiation…biotechnology
(Encyclopedia) biotechnology, the use of biological processes, as through the exploitation and manipulation of living organisms or biological systems, in the development or manufacture of a product…Trending
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