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mining

(Encyclopedia)mining, extraction of solid mineral resources from the earth. These resources include ores, which contain commercially valuable amounts of metals, such as iron and aluminum; precious stones, such as d...

periodic table

(Encyclopedia)CE5 periodic table, chart of the elements arranged according to the periodic law discovered by Dmitri I. Mendeleev and revised by Henry G. J. Moseley. In the periodic table the elements are arrange...

Washington, state, United States

(Encyclopedia)CE5 Washington, state in the Pacific Northwest of the United States. It is bordered by Idaho (E); Oregon, with the Columbia River marking much of the boundary (S); the Pacific Ocean (W); and the Ca...

formula, in chemistry

(Encyclopedia)formula, in chemistry, an expression showing the chemical composition of a compound. Formulas of compounds are used in writing the equations (see chemical equations) that represent chemical reactions....

fire fighting

(Encyclopedia)fire fighting, the use of strategy, personnel, and apparatus to extinguish, to confine, or to escape from fire. Ancient Rome is known to have had a fire department consisting by the 1st cent. of app...

United Arab Emirates

(Encyclopedia)CE5 United Arab Emirates, federation of sheikhdoms (2015 est. pop. 5,780,000), c.30,000 sq mi (77,700 sq km), SE Arabia, on the Persian Gulf and the Gulf of Oman. The federation, commonly known as ...

Iceland

(Encyclopedia)CE5 Iceland, Icel. Ísland, officially Republic of Iceland, republic (2015 est. pop. 330,000), 39,698 sq mi (102,819 sq km), the westernmost state of Europe, occupying an island in the Atlantic Oce...

Slovenia

(Encyclopedia)CE5 Slovenia slōvēˈnēə [key], Slovene Slovenija, officially Republic of Slovenia, republic (2015 est. pop. 2,075,000), 7,817 sq mi (20,246 sq km). It is bounded in the north by Austria, in the...

Mozambique, country, Africa

(Encyclopedia)CE5 Mozambique mōˌzəmbēkˈ [key], officially Republic of Mozambique, republic (2015 est. pop. 25,303,000), 302,659 sq mi (784,090 sq km), SE Africa. It borders on the Indian Ocean in the east; ...

magnetism

(Encyclopedia)CE5 Lines of induction around a single bar magnet and between opposite poles of different magnets magnetism, force of attraction or repulsion between various substances, especially those made of i...