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Aston, Francis William

(Encyclopedia)Aston, Francis William, 1877–1945, English physicist and chemist. He was affiliated with the Cavendish Laboratory, Cambridge, from 1910. In 1922 he received the Nobel Prize in Chemistry mainly for h...

compound

(Encyclopedia)compound, in chemistry, a substance composed of atoms of two or more elements in chemical combination, occurring in a fixed, definite proportion and arranged in a fixed, definite structure. A compound...

Herisau

(Encyclopedia)Herisau hāˈrĭzou [key], town, capital of Appenzell Ausser-Rhoden half canton, NE Switzerla...

Klaproth, Martin Heinrich

(Encyclopedia)Klaproth, Martin Heinrich märˈtēn hīnˈrĭkh kläpˈrōt [key], 1743–1817, German chemist. He is often referred to as the father of analytic chemistry. He recognized (1789) the presence of zirco...

Ladd, George Trumbull

(Encyclopedia)Ladd, George Trumbull, 1842–1921, American philosopher, b. Painesville, Ohio, grad. Western Reserve Univ., 1864, and Andover Theological Seminary, 1869. He taught at Yale from 1881 until his retirem...

sweetbread

(Encyclopedia)sweetbread. The thymus gland (known as throat sweetbread) and the pancreas (stomach sweetbread), especially of the calf and lamb (although beef sweetbreads are sometimes eaten), are considered delicac...

seaborgium

(Encyclopedia)seaborgium sēbôrˈgēəm [key], artificially produced radioactive chemical element; symbol Sg; at. no. 106; mass number of most stable isotope 271; m.p., b.p., sp. gr., and valence unknown. Situated...

Cushing, Luther Stearns

(Encyclopedia)Cushing, Luther Stearns, 1803–56, American lawyer, b. Lunenburg, Mass., grad. Harvard Law School, 1826. His best-known work is his short Manual of Parliamentary Practice (1844; many later editions),...

Mendeleev, Dmitri Ivanovich

(Encyclopedia)Mendeleev, Dmitri Ivanovich mĕndəlāˈəf, Rus. dəmēˈtrē ēväˈnəvĭch myĭndyĭlyāˈəf [key], 1834–1907, Russian chemist. He is famous for his formulation (1869) of the periodic law and t...

Basque language

(Encyclopedia)Basque language, tongue of uncertain relationship spoken by close to a million people, most of whom live in NE Spain and some of whom reside in SW France. The language has eight dialects. Speakers of ...