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Weaver, Robert Clifton

(Encyclopedia)Weaver, Robert Clifton, 1907–97, U.S. Secretary of Housing and Urban Development (1966–68), b. Washington, D.C., grad. Harvard (B.S., 1929; M.A., 1931; Ph.D., 1934). An African American, he was su...

Zoellick, Robert Bruce

(Encyclopedia)Zoellick, Robert Bruce zĕlˈlĭk [key], 1953–, U.S. government official and finance executive, b. Evergreen Park, Ill., grad. Swarthmore College (B.A., 1975), Harvard (J.D., M.P.P. 1981). As an ass...

Mariotte, Edme

(Encyclopedia)Mariotte, Edme ĕdˈmə märyôtˈ [key], 1620?–1684, French physicist. His De la nature de l'air (1676) includes a statement of Boyle's law (see gas laws), which he discovered independently and whi...

Rayleigh, John William Strutt, 3d Baron

(Encyclopedia)Rayleigh, John William Strutt, 3d Baron rāˈlē [key], 1842–1919, English physicist. He was professor at Cambridge (1879–84) and at the Royal Institution (1887–1905), and chancellor of Cambridg...

Regnault, Henri Victor

(Encyclopedia)Regnault, Henri Victor äNrēˈ vēktôrˈ rənyōˈ [key], 1810–78, French physicist and chemist. He was professor of chemistry at the École polytechnique, Paris, from 1840 and at the Collège de ...

gas laws

(Encyclopedia)gas laws, physical laws describing the behavior of a gas under various conditions of pressure, volume, and temperature. Experimental results indicate that all real gases behave in approximately the sa...

tin

(Encyclopedia)tin, metallic chemical element; symbol Sn [Lat. stannum]; at. no. 50; at. wt. 118.710; m.p. 231.9681℃; b.p. 2,270℃; sp. gr. 5.75 (gray), 7.3 (white); valence +2 or +4. Tin exhibits allotropy; abov...

Leonard, Bobby (Robert Leonard)

(Encyclopedia) Leonard, Bobby (Robert Leonard), 1932-2021, American basketball player and coach, b. Terre Haute, Ind. Leonard played basketball and tennis in high...

La Follette, Robert Marion

(Encyclopedia)La Follette, Robert Marion ləfŏlˈĭt [key], 1855–1925, American political leader, U.S. Senator from Wisconsin (1906–25), b. Primrose, Wis. Robert La Follete's wife, Belle Case La Follette, 18...

Lamennais, Félicité Robert de

(Encyclopedia)Lamennais or La Mennais, Félicité Robert de fālēsētāˈ rōbĕrˈ də lämənāˈ [key], 1782–1854, French Roman Catholic apologist and liberal, b. Saint-Malo. He was largely self-educated by w...