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humidity
(Encyclopedia) humidity, moisture content of the atmosphere, a primary element of climate. Humidity measurements include absolute humidity, the mass of water vapor per unit volume of natural air;…fan
(Encyclopedia) fan, device for agitating air or gases or moving them from one location to another. Mechanical fans with revolving blades are used for ventilation, in manufacturing, in winnowing grain…Montgomery, city, United States
(Encyclopedia) Montgomery, city (1990 pop. 187,106), state capital and seat of Montgomery co., E central Ala., near the head of navigation on the Alabama River just below the confluence of the Coosa…lithium
(Encyclopedia) lithiumlithiumlĭthˈēəm [key] [Gr.,=stone], metallic chemical element; symbol Li; at. no. 3; interval in which at. wt. ranges 6.938–6.997; m.p. about 180.54℃; b.p. about 1,342℃; sp. gr…Willis Haviland Carrier Biography
Willis Haviland Carrier air conditioning pioneerBorn: 11/26/1876Birthplace: Angola, N.Y. Carrier grew up on his father's farm on the New York shore of Lake Erie. In 1895 he received a…engineering
(Encyclopedia) engineering, profession devoted to designing, constructing, and operating the structures, machines, and other devices of industry and everyday life. Until the Industrial Revolution…John Gorrie Biography
John Gorriephysician, inventor of refrigeration and air-conditioningBorn: Oct. 3, 1802Birthplace: Charleston, South Carolina or Nevis, West Indies John Gorrie attended medical school in New…fluorine
(Encyclopedia) fluorinefluorinefl&oomacr;ˈərēn, –rĭn [key], gaseous chemical element; symbol F; at. no. 9; at. wt. 18.9984; m.p. −219.6℃; b.p. −188.14℃; density 1.696 grams per liter at STP;…refrigeration
(Encyclopedia) CE5 Compression system of refrigeration refrigeration, process for drawing heat from substances to lower their temperature, often for purposes of preservation. Refrigeration in its…Rare and Deadly Diseases: Legionnaires' Disease
Legionnaires' DiseaseRare and Deadly DiseasesIntroductionHemorrhagic FeversEbola: Africa's Bloody DiseaseMarburgHantavirus: Four Corners, United StatesMad Cow DiseaseCJD: Mad Cow's Human…Trending
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