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basilica

(Encyclopedia) CE5 Floor plan of a basilica basilicabasilicabəsĭlˈĭkə [key], large building erected by the Romans for transacting business and disposing of legal matters. Rectangular in form with…

Fermi, Enrico

(Encyclopedia) Fermi, EnricoFermi, Enricoĕnrēˈkō fĕrˈmē [key], 1901–54, American physicist, b. Italy. He studied at Pisa, Göttingen, and Leiden, and taught physics at the universities of Florence and…

Gay-Lussac, Joseph Louis

(Encyclopedia) Gay-Lussac, Joseph LouisGay-Lussac, Joseph Louiszhôzĕfˈ lwē gā-lüsäkˈ [key], 1778–1850, French chemist and physicist. He was professor in Paris at the Sorbonne, at the Polytechnic…

tachyon

(Encyclopedia) tachyontachyontăkˈēŏnˌ [key], hypothetical elementary particle that travels only at speeds exceeding that of light. According to the theory of relativity, the speed of light is the…

Procopius the Great

(Encyclopedia) Procopius the Great, Czech Prokop Holý, d. 1434, Czech Hussite leader. A priest, he joined the Hussite movement (see Hussites) and distinguished himself as a captain under John Zizka…

Bond, J. Max, Jr.

(Encyclopedia) Bond, J. Max, Jr., 1935-2009, African-American architect, b. Lexington, Ky., Harvard Univ. (BA, 1955; MA, 1958). Bond’s father, J. Max,…

Manhattan Project

(Encyclopedia) Manhattan Project, the wartime effort to design and build the first nuclear weapons (atomic bombs). With the discovery of fission in 1939, it became clear to scientists that certain…

Cappadocia

(Encyclopedia) CappadociaCappadociakăpədōˈshə [key], ancient region of Asia Minor, watered by the Halys River (the modern Kizil Irmak), in present E central Turkey. The name was applied at different…

chlorate

(Encyclopedia) chloratechlorateklōrˈāt, klôrˈ– [key] and perchloratechloratepərklōrˈāt, –klôrˈ– [key], salts of chloric acid, HClO3, and perchloric acid, HClO4, respectively. Perchlorates are safer…

Sheridan, Philip Henry

(Encyclopedia) Sheridan, Philip Henry, 1831–88, Union general in the American Civil War, b. Albany, N.Y. Although not a brilliant general, Sheridan's flair for leadership and his ready fighting…