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Dee, river, Wales

(Encyclopedia)Dee, Welsh Dyfrdwy, river, c.70 mi (110 km) long, rising in the Cambrian Mts., Gwynedd, NW Wales, and flowing NE through Llyn Tegid (Bala Lake), then meandering through a picturesque course NE, N, and...

Stikine

(Encyclopedia)Stikine stĭkēnˈ [key], river, 335 mi (539 km) long, rising in the Stikine Mts., NW British Columbia, Canada. It flows in an arc west and southwest, crossing SE Alaska, to the Pacific Ocean N of Wra...

Bernoulli's principle

(Encyclopedia)CE5 Bernoulli's principle Bernoulli's principle, physical principle formulated by Daniel Bernoulli that states that as the speed of a moving fluid (liquid or gas) increases, the pressure within th...

Arabia

(Encyclopedia)Arabia ərāˈbēə [key], peninsula (1991 est. pop. 35,000,000), c.1,000,000 sq mi (2,590,000 sq km), SW Asia. It is bordered on the W by the Gulf of Aqaba and the Red Sea, on the S by the Gulf of Ad...

Tehuantepec, Isthmus of

(Encyclopedia)Tehuantepec, Isthmus of, c.125 mi (200 km) wide at its narrowest, S Mexico, between the Gulf of Campeche and the Gulf of Tehuantepec. It is mostly a rolling, tropical lowland with the lowest pass elev...

Calcasieu

(Encyclopedia)Calcasieu kălˈkəso͞o [key], river c.200 mi (320 km) long, rising in W central La. and flowing S through Lake Charles and Calcasieu Lake to the Gulf of Mexico. The river, which is partly navigable,...

Arethusa, in Greek mythology

(Encyclopedia)Arethusa ărĭtho͞oˈsə [key], in Greek mythology, nymph favored by Artemis and loved by the river god Alpheus. While Arethusa was bathing in his stream, Alpheus rose up and tried to abduct her, but...

Nelson, river, Canada

(Encyclopedia)Nelson, river, c.400 mi (640 km) long, issuing from the northeast end of Lake Winnipeg, central Man., Canada, and flowing NE to Hudson Bay at Port Nelson. With the Bow–South Saskatchewan–Saskatche...

Mississippi Sound

(Encyclopedia)Mississippi Sound, arm of the Gulf of Mexico, c.100 mi (160 km) long and from 7 to 15 mi (11–24 km) wide, extending from Lake Borgne in Louisiana on the west to Mobile Bay in Alabama on the east. It...

Aetolia

(Encyclopedia)Aetolia ētōlˈyə [key], region of ancient Greece, N of the Gulf of Corinth and the Gulf of Calydon, E of the Achelous River (separating it from Acarnania). Little is known of the early population o...