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Stiles, Ezra

(Encyclopedia) Stiles, Ezra, 1727–95, American theologian and educator, b. North Haven, Conn., grad. Yale, 1746. He studied theology, was ordained in 1749, and tutored (1749–55) at Yale. Resigning…

Useful Tools

.col {width: 48%; align: left; float:left;} @media only screen and (max-width: 480px) { .col { display:block; width:100%; } } Do you need to figure out how many cups are in a liter? Do you need to…

radiator

(Encyclopedia) radiator, device used to heat an area surrounding it or to cool a fluid circulating within it. The familiar radiators of steam and hot water heating systems in buildings are misnamed,…

dyne

(Encyclopedia) dynedynedīn [key], unit of force in the cgs system of units, which is based on the metric system; an acceleration of 1 centimeter per second per second is produced when a force of 1…

Avogadro, Amedeo, conte di Quaregna

(Encyclopedia) Avogadro, Amedeo, conte di QuaregnaAvogadro, Amedeo, conte di Quaregnaämādāˈō kônˈtā dē kwärāˈnyä ävōgäˈdrō [key], 1776–1856, Italian physicist, b. Turin. He became professor of…

Cornell University

(Encyclopedia) Cornell University, mainly at Ithaca, N.Y.; with land-grant, state, and private support; coeducational; chartered 1865, opened 1868. It was named for Ezra Cornell, who donated $500,000…

Smallest Animal Hall of Fame

Smallest   Follow this slideshow to learn about the smallest creatures on Earth, from the bumblebee bat to the fairyfly. Prev Next Land mammal The bumblebee bat tips the scales at…

Q fever

(Encyclopedia) Q fever, disease caused by Coxiella burnetii, a small, Gram-negative bacterium. The bacterium infects livestock (cattle, goats, and sheep) and other domesticated animals, and is found…

Garrick, David

(Encyclopedia) Garrick, David, 1717–79, English actor, manager, and dramatist. He was indisputably the greatest English actor of the 18th cent., and his friendships with Diderot, Samuel Johnson,…