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Dalton, John

(Encyclopedia)Dalton, John dôlˈtən [key], 1766–1844, English scientist. He revived the atomic theory (see atom), which he formulated in the first volume of his New System of Chemical Philosophy (2 vol., 1808�...

Dalton's law

(Encyclopedia)Dalton's law [for John Dalton], physical law that states that the total pressure exerted by a homogeneous mixture of gases is equal to the sum of the partial pressures of the individual gases. The par...

Dalton

(Encyclopedia)Dalton, city (2020 pop. 34,417), seat of Whitfield co., extreme NW Ga., in the Appalachian valley; inc. 1847. It is a highly industrialized city in a fa...

Dalton plan

(Encyclopedia)Dalton plan: see progressive education. ...

Hooker, Sir Joseph Dalton

(Encyclopedia)Hooker, Sir Joseph Dalton: see under Hooker, Sir William Jackson. ...

combining weight

(Encyclopedia)combining weight, the proportion (by weight) in which a chemical element combines with other elements to form compounds. The determination of combining weights was a very important part of early chemi...

John, Saint

(Encyclopedia)John, Saint, one of the Twelve Apostles, traditional author of the fourth Gospel, three letters, and the Book of Revelation (see John, Gospel according to Saint; John, letters; Revelation); it is high...

St. John, John Pierce

(Encyclopedia)St. John, John Pierce, 1833–1916, American political reformer, b. Brookville, Ind. He traveled in the West and in South America, fought in the Union army in the Civil War, and after 1869 practiced l...