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atomic weight

(Encyclopedia)atomic weight, mean (weighted average) of the masses of all the naturally occurring isotopes of a chemical element, as contrasted with atomic mass, which is the mass of any individual isotope. Althoug...

North Reading

(Encyclopedia)North Reading rĕdˈĭng [key], residential town (1990 pop. 12,002), Middlesex co., NE Mass., on the Ipswich River; settled 1651, set off from Reading and inc. 1853. Athletic footwear is manufactured ...

Melrose, city, United States

(Encyclopedia)Melrose, city (1990 pop. 28,150), Middlesex co., E Mass., a suburb of Boston; settled c.1629, set off from Malden and inc. 1850. It is chiefly residential. The opera star Geraldine Farrar was born in ...

Milton

(Encyclopedia)Milton, town (1990 pop. 25,725), Norfolk co., E Mass., a residential suburb of Boston, on the Neponset River; settled 1636, set off from Dorchester and inc. 1662. Granite quarries are nearby. Milton i...

Acton

(Encyclopedia)Acton, town (2020 pop. 24,021), Middlesex co., E Mass., NW of Boston; settled c.1680, inc. 1735. Among its manufactures are electrical machinery, chemicals, prefabricated houses, and preci...

Root, George Frederick

(Encyclopedia)Root, George Frederick, 1820–95, American composer, b. Sheffield, Mass. He taught at schools in Boston and New York City. He wrote gospel songs and composed sentimental ballads to Fanny Crosby's lyr...

Conwell, Russell Herman

(Encyclopedia)Conwell, Russell Herman, 1843–1925, American Baptist minister and lecturer, b. Worthington, Mass. After practicing law, he was ordained (1879) and went to Philadelphia as a minister. He was founder ...

Dracut

(Encyclopedia)Dracut drāˈkət [key], town (2020 pop. 32,617), Middlesex co., NE Mass., near the N.H. line...

Ann, Cape

(Encyclopedia)Ann, Cape, NE Mass., N of Massachusetts Bay. It includes Gloucester and Rockport with their fishing fleets, resorts, and artists' colonies. The cape was the epicenter of the 1755 earthquake that damag...

Smith, Thomas, Captain

(Encyclopedia)Smith, Thomas, Captain, American painter, active in New England from 1675 to 1690. Smith introduced baroque painting techniques into American art. He made use of chiaroscuro technique to render solid ...