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amber
(Encyclopedia)amber, fossilized tree resin. Amber can vary in color from yellow to red to green and blue. The best commercial amber is transparent, but some varieties are cloudy. To be called amber, the resin must ...Beltrami, Eugenio
(Encyclopedia)Beltrami, Eugenio āo͞ojĕˈnyō bālträˈmē [key], 1835–99, Italian mathematician. He is famous for his work on non-euclidean geometry, electricity, and magnetism. ...teleportation, in physics
(Encyclopedia)teleportation, in physics, the transfer of key properties from one particle (or group of particles) to another a significant distance apart without a physical connection between the two particles (or ...fluid mechanics
(Encyclopedia)fluid mechanics, branch of mechanics dealing with the properties and behavior of fluids, i.e., liquids and gases. Because of their ability to flow, liquids and gases have many properties in common not...Lemonnier, Pierre Charles
(Encyclopedia)Lemonnier, Pierre Charles pyĕr shärl ləmônyāˈ [key], 1715–99, French astronomer. For many years he was professor of physics at the Collège de France. He studied the moon and the influence of ...STP
(Encyclopedia)STP or standard temperature and pressure, standard conditions for measurement of the properties of matter. The standard temperature is the freezing point of pure water, 0℃ or 273.15K. The standard...xerography
(Encyclopedia)xerography zərŏgˈrəfēˌ [key], also called electrophotography, method of dry photocopying in which the image is transferred by using the attractive forces of electric charges. A beam of light, us...direct current
(Encyclopedia)direct current, abbr. DC, a movement of electric charge across an arbitrarily defined surface in one direction only. See electricity; generator. ...complementarity principle
(Encyclopedia)complementarity principle, physical principle enunciated by Niels Bohr in 1928 stating that certain physical concepts are complementary. If two concepts are complementary, an experiment that clearly i...sunstone
(Encyclopedia)sunstone. 1 Crystal mineral thought by some to have been used by the Vikings as an aid to navigation, especially in conditions of low visibility due to clouds or fog when the position of the sun was u...Browse by Subject
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