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Winthrop, John, 1714–79, American scientist

(Encyclopedia)Winthrop, John, 1714–79, American scientist, b. Boston, Mass., grad. Harvard, 1732. Because of his study of earthquakes, he is sometimes called the founder of seismology. He made scientific observat...

specific heat

(Encyclopedia)specific heat, ratio of the heat capacity of a substance to the heat capacity of a reference substance, usually water. Heat capacity is the amount of heat needed to change the temperature of a unit ma...

Dollond, John

(Encyclopedia)Dollond, John dŏlˈənd [key], 1706–61, English optician and inventor. A silk weaver, he taught himself languages, mathematics, and science, becoming a noted scholar as well as a scientist. He inve...

Sörensen, Sören Peter Lauritz

(Encyclopedia)Sörensen, Sören Peter Lauritz söˈrən pēˈtər louˈrēts söˈrənsən [key], 1868–1939, Danish biochemist. In 1899 he received a Ph.D. degree in Copenhagen. Sörensen was director of chemistr...

Conon

(Encyclopedia)Conon kōˈnŏn, –nən [key], 3d cent. b.c., Greek astronomer and mathematician of Samos. He traveled in the western part of the Greek world making astronomical observations, then settled at Alexand...

watt

(Encyclopedia)watt [for James Watt], abbr. W, unit of power, or work done per unit time, equal to 1 joule per second. It is used as a measure of electrical and mechanical power. One watt is the amount of power that...

polymer

(Encyclopedia)CE5 A. Addition polymerization: Two ethylene molecules, C2H4, combine to form two links in the polyethylene chain molecule (C2H4)n. B. Condensation polymerization: Two glycine molecules, NH2CH2COOH...

Gray, Stephen

(Encyclopedia)Gray, Stephen, 1666–1736, English physicist. Gray, a dyer by trade, cultivated science as a hobby. In 1696 he published an account of a magnifying glass that interested the Royal Society and from th...

Alfonsine tables

(Encyclopedia)Alfonsine tables or Alphonsine tables ălfŏnˈsĭn [key], compilation of astronomical data tabulating the positions and movements of the planets, completed c.1252 and printed in Venice in 1483. They ...

Vanderbilt University

(Encyclopedia)Vanderbilt University, at Nashville, Tenn.; coeducational; chartered 1872 as Central Univ. of Methodist Episcopal Church, founded and renamed 1873, opened 1875 through a gift from Cornelius Vanderbilt...