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chocolate

(Encyclopedia) chocolate, general term for the products of the seeds of the cacao or chocolate tree, used for making beverages or confectionery. The flavor of chocolate depends not only on the…

copernicium

(Encyclopedia) copernicium, artificially produced radioactive chemical element; symbol Cn; at. no. 112; mass number of most stable isotope 285; m.p., b.p., sp. gr., and valence unknown. Situated in…

Bryant, William Cullen

(Encyclopedia) Bryant, William CullenBryant, William Cullenbrīˈənt [key], 1794–1878, American poet and newspaper editor, b. Cummington, Mass. The son of a learned and highly respected physician,…

Bernstein, Leonard

(Encyclopedia) Bernstein, LeonardBernstein, Leonardbûrnˈstīn, –stēn [key], 1918–90, American composer, conductor, and pianist, b. Lawrence, Mass., grad. Harvard, 1939, and Curtis Institute of Music,…

atomic bomb

(Encyclopedia) atomic bomb or A-bomb, weapon deriving its explosive force from the release of nuclear energy through the fission (splitting) of heavy atomic nuclei. The first atomic bomb was produced…

radioactivity

(Encyclopedia) CE5 Effects of a magnetic field on the products of radioactivity CE5 Disintegration series: Radioactive decay of radium-226 into lead-206 radioactivity, spontaneous…

Morton, William Thomas Green

(Encyclopedia) Morton, William Thomas Green, 1819–68, American dentist and physician, b. Charlton, Mass., studied at Baltimore College of Dental Surgery. He practiced dentistry in Boston, for a time…

athlete's heart

(Encyclopedia) athlete's heart, common term for an enlarged heart associated with repeated strenuous exercise. As a result of the increased workload required of it, the heart will increase…

Mulliken, Robert Sanderson

(Encyclopedia) Mulliken, Robert Sanderson, 1896–1986, American chemist, b. Newburyport, Mass., Ph.D. Univ. of Chicago, 1921. Mulliken taught at New York Univ. from 1926 to 1928 and then at the Univ.…

Malden

(Encyclopedia) MaldenMaldenmôlˈdən [key], city (1990 pop. 53,884), Middlesex co., E Mass., a suburb of Boston, in the Mystic valley; settled 1640, inc. 1882. Among its varied manufactures are…