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French Southern and Antarctic Lands

(Encyclopedia)French Southern and Antarctic Lands, overseas territory of France, including Adélie Land, which covers c.200,000 sq mi (520,000 sq km) in Antarctica, and a number of islands in the S Indian Ocean. Th...

Doubs, river, France and Switzerland

(Encyclopedia)Doubs, river, c.270 mi (435 km) long, rising in the Jura Mts., E France, and flowing northeast, forming part of the French-Swiss border, then looping into W Switzerland before turning back into France...

formula, in mathematics and physics

(Encyclopedia)formula, in mathematics and physics, equation expressing a definite fixed relationship between certain quantities. The quantities are usually expressed by letters, and their relationship is indicated ...

ether, in physics and astronomy

(Encyclopedia)ether or aether, in physics and astronomy, a hypothetical medium for transmitting light and heat (radiation), filling all unoccupied space; it is also called luminiferous ether. In Newtonian physics a...

Ishim, river, Russia and Kazakhstan

(Encyclopedia)Ishim, river, c.1,130 mi (1,819 km) long, W Siberian Russia and Kazakhstan. It rises N of Qaraghandy in Kazakhstan (where it is known as the Esil), flows W past Atbasar, N past Petropavl, and then joi...

Cardamoms, mountains, Thailand and Cambodia

(Encyclopedia)Cardamoms kärˈdəməmz [key], Thai Banthat, Khmer Kravanh, mountain group extending c.100 mi (160 km) along the Thai-Cambodian border, E of Chanthaburi, SE Thailand. The mountains receive monsoon ra...

Alexandria Troas

(Encyclopedia)Alexandria Troas trōˈăs [key], ancient Greek seaport city, Mysia, NW Asia Minor, called Troas in the Bible. It was important under the Greeks and Romans. ...

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