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Ziegler, Karl

(Encyclopedia)Ziegler, Karl tsēˈglər [key], 1898–1973, German chemist. Educated at the Univ. of Marburg, he taught at Heidelberg and Halle and for a short period at the Univ. of Chicago. He became director of ...

voltaic cell

(Encyclopedia)voltaic cell, a simple device with which chemical energy is converted into electrical energy. Two dissimilar metals (e.g., copper and zinc) are immersed in an electrolyte (e.g., a dissolved sulfate). ...

Benedict's solution

(Encyclopedia)Benedict's solution, deep-blue alkaline solution used to test for the presence of the aldehyde functional group, −CHO. The substance to be tested is heated with Benedict's solution; formation of a b...

Waters, Alice

(Encyclopedia)Waters, Alice, 1944–, American chef and author whose advocacy of organically grown, locally produced seasonal food and of sustainable agriculture has influenced America's approach to food, b. Chatha...

Bialik, Hayyim Nahman

(Encyclopedia)Bialik, Hayyim Nahman hīˈyəm näˈmən byäˈlēk [key], 1873–1934, Hebrew poet, publisher in Odessa, Berlin, and Tel-Aviv, b. Volhynia, Russia. As an editor and publisher Bialik spread the ideas...

Greenleaf, Simon

(Encyclopedia)Greenleaf, Simon, 1783–1853, American legal writer, b. Newburyport, Mass. A member of the Maine bar, he won a high reputation for legal scholarship early in his career. With the admission (1820) of ...

radio astronomy

(Encyclopedia)radio astronomy, study of celestial bodies by means of the electromagnetic radio frequency waves they emit and absorb naturally. Radio waves also come from outside the Milky Way. These extragalact...

halakah

(Encyclopedia)halakah or halacha both: häläˈkhä, häläkhäˈ [key] [Heb.,=law], in Judaism, the body of law regulating all aspects of life, including religious ritual, familial and personal status, civil relat...

Cardozo, Benjamin Nathan

(Encyclopedia)Cardozo, Benjamin Nathan kärdōˈzō [key], 1870–1938, American jurist, associate justice of the U.S. Supreme Court (1932–38), b. New York City. Educated at Columbia Univ., he practiced law until...

Maine, Sir Henry James Sumner

(Encyclopedia)Maine, Sir Henry James Sumner, 1822–88, English jurist and historian, educated at Cambridge. A pioneer in the historical and comparative study of institutions, he viewed the history of laws as the m...