Columbia Encyclopedia

Search results

500 results found

law of simple multiple proportions

(Encyclopedia)law of simple multiple proportions, in chemistry, the statement that when two or more elements form more than one compound, the ratio of the weights of one element that combine with a given weight of ...

air, law of the

(Encyclopedia)air, law of the, in the broadest sense, all law connected with the use of the air, including radio and satellite transmissions; more commonly, it refers to laws concerning civil aviation. The developm...

Caroline Affair

(Encyclopedia)Caroline Affair. In 1837 a group of men led by William Lyon Mackenzie rebelled in Upper Canada (now Ontario), demanding a more democratic government. There was much sympathy for their cause in the Uni...

Thames, battle of the

(Encyclopedia)Thames, battle of the, engagement fought on the Thames River near Chatham, Ont. (Oct. 5, 1813), in the War of 1812. Gen. William H. Harrison led an American force of about 3,000 against a British army...

inertia

(Encyclopedia)inertia ĭnûrˈshə [key], in physics, the resistance of a body to any alteration in its state of motion, i.e., the resistance of a body at rest to being set in motion or of a body in motion to any c...

conservation of natural resources

(Encyclopedia)conservation of natural resources, the wise use of the earth's resources by humanity. The term conservation came into use in the late 19th cent. and referred to the management, mainly for economic rea...

South Arabia, Federation of

(Encyclopedia)South Arabia, Federation of, federation, 1963–67, S Arabian peninsula, formed by the merger of the British colony of Aden with the Federation of the Emirates of the South, a British protectorate. Th...

South India, Church of

(Encyclopedia)South India, Church of, Indian Protestant church, formed in 1947 by the merger of Anglican dioceses in India, Myanmar, and Ceylon (Sri Lanka); the Methodist Church of South India; and the South India ...

Perrin, Jean Baptiste

(Encyclopedia)Perrin, Jean Baptiste zhäN bätēstˈ pĕrăNˈ [key], 1870–1942, French physicist. From 1910 to 1940 he was professor at the Univ. of Paris, and in 1941 he came to the United States. Perrin specia...

Omaha, indigenous people of North America

(Encyclopedia)Omaha ōˈməhä, –hô [key], Native Americans whose language belongs to the Siouan branch of the Hokan-Siouan linguistic stock (see Native American languages). They, with the Ponca, migrated from t...