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voltmeter

(Encyclopedia)voltmeter, instrument used to measure differences of electric potential, commonly called voltage, in volts or units that are multiples or fractions of volts. A voltmeter is usually combined with an am...

Washington Monument

(Encyclopedia)Washington Monument, obelisk-shaped tower, 555 ft 51⁄9 in. (169.3 m) high, located on a 106-acre (43-hectare) site at the west end of the Mall, Washington, D.C.; dedicated 1885. The world's tallest ...

Selim III

(Encyclopedia)Selim III, 1761–1808, Ottoman sultan (1789–1807), nephew and successor of Abd al-Hamid I to the throne of the Ottoman Empire (Turkey). He suffered severe defeats in the second of the Russo-Turkish...

Luzon

(Encyclopedia)Luzon lo͞ozŏnˈ [key], island (1990 pop. 30,797,458), 40,420 sq mi (104,688 sq km), largest, most populous, and most important of the Philippine Islands. As the major island, Luzon has played the ...

Glasgow, Ellen

(Encyclopedia)Glasgow, Ellen glăsˈgō [key], 1873–1945, American novelist, b. Richmond, Va. In revolt against the romantic treatment of Southern life, Glasgow presented in fiction a social history of Virginia s...

Payne-Aldrich Tariff Act

(Encyclopedia)Payne-Aldrich Tariff Act, 1909, passed by the U.S. Congress. It was the first change in tariff laws since the Dingley Act of 1897; the issue had been ignored by President Theodore Roosevelt. The Repub...

dower

(Encyclopedia)dower, that portion of a deceased husband's real property that a widow is legally entitled to use during her lifetime to support herself and their children. A wife may claim the dower if her husband d...

Persian Gulf

(Encyclopedia)Persian Gulf, arm of the Arabian Sea, 90,000 sq mi (233,100 sq km), between the Arabian peninsula and Iran, extending c.600 mi (970 km) from the Shatt al Arab delta to the Strait of Hormuz, which link...

Severnaya Zemlya

(Encyclopedia)Severnaya Zemlya syĕˈvĭrnīə zĭmlyäˈ [key] [Rus.,=northern land], archipelago, c.14,300 sq mi (37,010 sq km), between the Kara and Laptev seas, Krasnoyarsk Territory, N Siberian Russia, off the...

sea level

(Encyclopedia)sea level, the level of the sea, which serves as the datum used for measurement of land elevations and ocean depths. Theoretically, one would expect sea level to be a fixed and permanent horizontal su...