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San Diego

(Encyclopedia)San Diego săn dēāˈgō [key], city (1990 pop. 1,110,549), seat of San Diego co., S Calif., on San Diego Bay; inc. 1850. San Diego includes the unincorporated communities of La Jolla and Spring Vall...

Hagia Sophia

(Encyclopedia)Hagia Sophia häˈjə sōfēˈə, hāˈjēə, [key] [Gr.,=Holy Wisdom] or Santa Sophia, Turkish Ayasofya, originally a Christian church at Constantinople (now İstanbul, Turkey) and then a mosque unde...

Mbeki, Thabo Mvuyelwa

(Encyclopedia)Mbeki, Thabo Mvuyelwa täˈbō mvo͝oyĕlˈə mbĕkˈē [key], 1942–, South African political leader. Mbeki was born into a politically active family; his father, Govan Mbeki, an official with the A...

World Wide Web

(Encyclopedia)World Wide Web (WWW or W3), collection of globally distributed text and multimedia documents and files and other network services linked in such a way as to create an immense electronic library from w...

energy, sources of

(Encyclopedia)energy, sources of, origins of the power used for transportation, for heat and light in dwelling and working areas, and for the manufacture of goods of all kinds, among other applications. The develop...

Naples, kingdom of

(Encyclopedia)Naples, kingdom of, former state, occupying the Italian peninsula south of the former Papal States. It comprised roughly the present regions of Campania, Abruzzi, Molise, Basilicata, Apulia, and Calab...

drone

(Encyclopedia)drone or remotely piloted vehicle, a pilotless craft guided by remote control. Aircraft, ships, and land vehicles can be designed or outfitted as drones. Underwater vessels—both piloted and pilotles...

modem

(Encyclopedia)modem [modulator/demodulator], an external device or internal electronic circuitry used to transmit and receive digital data over a communications line normally used for analog signals. A modem attach...

road

(Encyclopedia)road, strip of land used for transportation. The history of roads has been related to the centralizing of populations in powerful cities, which the roads have served for military purposes and for trad...

tsunami

(Encyclopedia)tsunami tso͝onäˈmē [key], series of catastrophic ocean waves generated by submarine movements, which may be caused by earthquakes, volcanic eruptions, landslides beneath the ocean, or an asteroid ...