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thermoelectricity
(Encyclopedia)thermoelectricity, direct conversion of heat into electric energy, or vice versa. The term is generally restricted to the irreversible conversion of electricity into heat described by the English phys...Gunter, Edmund
(Encyclopedia)Gunter, Edmund, 1581–1626, English mathematician and astronomer, educated at Westminster School, London, and Christ Church, Oxford. He invented (1618) a small portable quadrant and discovered (1622)...British thermal unit
(Encyclopedia)British thermal unit, abbr. Btu, unit for measuring heat quantity in the customary system of English units of measurement, equal to the amount of heat required to raise the temperature of one pound of...Enhanced Fujita scale
(Encyclopedia)Enhanced Fujita scale: see Fujita scale. ...land art
(Encyclopedia)land art or earthworks, art form developed in the late 1960s and early 70s by Robert Smithson, Robert Morris, Michael Heizer, and others, in which the artist employs the elements of nature in situ or ...Saffir-Simpson scale
(Encyclopedia)Saffir-Simpson scale săfˈər– [key], standard scale for rating the severity of hurricanes as a measure of the damage they cause; it is based on observations of numerous North Atlantic Basin hurric...Le Châtelier's principle
(Encyclopedia)Le Châtelier's principle, chemical principle that states that if a system in equilibrium is disturbed by changes in determining factors, such as temperature, pressure, and concentration of components...slide rule
(Encyclopedia)slide rule, instrument for making numerical computations and readings, the results of which may be read easily and quickly after performing simple mechanical manipulations. Multiplication and division...weighing machine
(Encyclopedia)weighing machine: see balance; scale. ...vernier
(Encyclopedia)vernier vûrˈnēr [key], auxiliary scale, either straight or an arc of a circle, designed to slide along a fixed scale. Its unit divisions, usually smaller than those on the fixed scale, permit a far...Browse by Subject
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