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Wells, David Ames
(Encyclopedia)Wells, David Ames, 1828–98, American economist, b. Springfield, Mass., grad. Williams, 1847, and Lawrence Scientific School, Cambridge, Mass., 1851. Early in life he wrote several popular books on s...white dwarf
(Encyclopedia)white dwarf, in astronomy, a type of star that is abnormally faint for its white-hot temperature (see mass-luminosity relation). Typically, a white dwarf star has the mass of the sun and the radius of...pilotage
(Encyclopedia)pilotage: see air navigation.automatic pilot
(Encyclopedia)automatic pilot: see air navigation. ...GEM, acronym for ground-effect machine
(Encyclopedia)GEM: see air-cushion vehicle.Hovercraft
(Encyclopedia)Hovercraft: see air-cushion vehicle. ...aneroid altimeter
(Encyclopedia)aneroid altimeter: see air navigation. ...heat pump
(Encyclopedia)heat pump: see air conditioning. ...avionics
(Encyclopedia)avionics āˌvēŏnˈĭks [key], electronic instruments used in air or space flight; also the design and production of such instruments. Early planes had few instruments, but as aviation and aircraft ...Scheele, Karl Wilhelm
(Encyclopedia)Scheele, Karl Wilhelm kärl vĭlˈhĕlm shāˈlə [key], 1742–86, Swedish chemist, b. Stralsund. He is known as the discoverer of many chemical substances. He was a pharmacist in Stockholm, in Uppsa...Browse by Subject
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