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Young's modulus

(Encyclopedia)Young's modulus [for Thomas Young], number representing (in pounds per square inch or dynes per square centimeter) the ratio of stress to strain for a wire or bar of a given substance. According to Ho...

Breckinridge, Sophonisba Preston

(Encyclopedia)Breckinridge, Sophonisba Preston, 1866–1948, American pioneer social worker, educator, and author, b. Lexington, Ky., grad. Wellesley, 1888, Ph.D. Univ. of Chicago, 1901. She was the first woman to ...

Rashi

(Encyclopedia)Rashi räˈshē [key], 1040–1105, Jewish exegete, grammarian, and legal authority, b. Troyes, France. The name he is known by is an acronym of Rabbi Solomon bar Isaac. He studied in Worms and Mainz,...

Schouler, James

(Encyclopedia)Schouler, James sko͞oˈlər [key], 1839–1920, American historian and lawyer, b. West Cambridge (now Arlington), Mass. Admitted to the bar in 1862, he served in the Union army and returned to Boston...

relay

(Encyclopedia)relay, electromechanical switch operated by a flow of electricity in one circuit and controlling the flow of electricity in another circuit. A relay consists basically of an electromagnet with a soft ...

Fort Sumter

(Encyclopedia)Fort Sumter, fortification, built 1829–60, on a shoal at the entrance to the harbor of Charleston, S.C., and named for Gen. Thomas Sumter; scene of the opening engagement of the Civil War. Upon pass...

Sevastopol

(Encyclopedia)Sevastopol sĭvăsˈtəpōlˌ [key], formerly spelled Sebastopol, city (1989 pop. 355,000), on the Crimean peninsula and the Bay of Sevastopol, an inlet of the Black Sea. From 1954 part of Ukraine (th...

Benjamin, Judah Philip

(Encyclopedia)Benjamin, Judah Philip, 1811–84, Confederate statesman and British barrister, b. Christiansted, St. Croix, Virgin Islands, of Jewish parents. His family moved (c.1813) to Wilmington, N.C., and final...

Emden

(Encyclopedia)Emden ĕmˈdən [key], city, Lower Saxony, NW Germany, at the mouth of the Ems River, the ter...

Hampton Roads

(Encyclopedia)Hampton Roads, roadstead, 4 mi (6.4 km) long and 40 ft (12.2 m) deep, SE Va., through which the waters of the James, Nansemond, and Elizabeth rivers pass into Chesapeake Bay. One of the finest natural...