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Moore's Law

(Encyclopedia)Moore's Law, a projection of semiconductor manufacturing trends made by Gordon E. Moore, cofounder of the Intel Corp., in a 1965 magazine article. He observed that the number of transistors per square...

snapping turtle

(Encyclopedia)snapping turtle, large, aggressive New World freshwater turtle. The two snapping turtle species are the sole members of the family Chelydridae. Snapping turtles prefer quiet, muddy water. They spend m...

thermometer

(Encyclopedia)thermometer, instrument for measuring temperature. Galileo and Sanctorius devised thermometers consisting essentially of a bulb with a tubular projection, the open end of which was immersed in a liqui...

Cartier, Sir Georges Étienne

(Encyclopedia)Cartier, Sir Georges Étienne zhôrzh ātyĕnˈ kärtyāˈ [key], 1814–73, Canadian statesman, b. Quebec prov. He was called to the bar of Lower Canada (Quebec) in 1835. He took part in the rebellio...

Filson, John

(Encyclopedia)Filson, John, c.1753–1788, Kentucky pioneer, b. Chester co., Pa. In 1783 he acquired land in Kentucky, taught school, and wrote Discovery, Settlement, and Present State of Kentucke (1784). This firs...

aerial and satellite photography

(Encyclopedia)aerial and satellite photography, technology and science of taking still or moving-picture photographs from a camera mounted on a balloon, airplane, satellite, rocket, or spacecraft. In the 19th cent....

Smith, John, English colonist in America

(Encyclopedia)Smith, John, c.1580–1631, English colonist in America, b. Willoughby, Lincolnshire, England. A merchant's apprentice until his father's death in 1596, he thereafter lived an adventurous life, travel...

scanning tunneling microscope

(Encyclopedia)scanning tunneling microscope (STM), device for studying and imaging individual atoms on the surfaces of materials. The instrument was invented in the early 1980s by Gerd Binnig and Heinrich Rohrer, w...

Russian State Library

(Encyclopedia)Russian State Library (RSL), Russia's national library, located in Moscow; one of the world's largest libraries. Moscow's first public library, the RSL was founded in 1862 as the library portion of th...

geodesy

(Encyclopedia)geodesy jēŏdˈĭsē [key] or geodetic surveying, theory and practice of determining the position of points on the earth's surface and the dimensions of areas so large that the curvature of the earth...