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electric fish

(Encyclopedia) electric fish, name for various fish that produce electricity by means of organs usually developed from modified muscle tissue. The electric eels of South America are freshwater…

sextant

(Encyclopedia) CE5 Sextant sextant, instrument for measuring the altitude of the sun or another celestial body; such measurements can then be used to determine the observer's geographical…

gamma radiation

(Encyclopedia) gamma radiation, high-energy photons emitted as one of the three types of radiation resulting from natural radioactivity. It is the most energetic form of electromagnetic radiation,…

Dunbar

(Encyclopedia) Dunbar, town, East Lothian, SE Scotland, on the North Sea. It is a fishing center and seaside resort. Dunbar Castle was held by “Black…

Shrewsbury, John Talbot, 1st earl of

(Encyclopedia) Shrewsbury, John Talbot, 1st earl ofShrewsbury, John Talbot, 1st earl ofshrōzˈbərē, shr&oomacr;zˈ– [key], 1388?–1453, English soldier. As lieutenant of Ireland (1414–19, 1445–47)…

Southampton, Thomas Wriothesley, 4th earl of

(Encyclopedia) Southampton, Thomas Wriothesley, 4th earl of, 1607–67, English nobleman; son of the 3d earl. At first an opponent of the court party in the events leading up to the English civil war,…

Wilmington, Spencer Compton, earl of

(Encyclopedia) Wilmington, Spencer Compton, earl of, 1673?–1743, British politician. He was a member of Parliament (1695–1710, 1713–30) and served as speaker of the House of Commons (1715–27). He was…

Warwick, Guy de Beauchamp, earl of

(Encyclopedia) Warwick, Guy de Beauchamp, earl ofWarwick, Guy de Beauchamp, earl ofbēˈchəm, wŏrˈĭk [key], d. 1315, English nobleman. He was active in Edward I's campaigns in Scotland. A leading…

Bohun, Henry de, 1st earl of Hereford

(Encyclopedia) Bohun, Henry de, 1st earl of HerefordBohun, Henry de, 1st earl of Herefordb&oomacr;n, hĕˈrəfərd [key], 1176–1220, English nobleman. Although King John granted him the marcher…