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Simpson, Sir James Young

(Encyclopedia)Simpson, Sir James Young, 1811–70, Scottish physician, M.D. Univ. of Edinburgh, 1832. He became (1839) professor of medicine and midwifery at Edinburgh. For a while he employed ether anesthesia in c...

Stephen, Sir James Fitzjames

(Encyclopedia)Stephen, Sir James Fitzjames, 1829–94, English jurist and journalist; brother of Sir Leslie Stephen. He was educated at Eton and Cambridge and was admitted to the bar in 1854. After 1855 he wrote ma...

Stirling, Sir James Frazer

(Encyclopedia)Stirling, Sir James Frazer, 1924–92, British architect., b. Glasgow, grad. Univ. of Liverpool school of architecture (1950). Settling in London, Stirling worked in partnership (1956–63) with James...

Head, Sir Edmund Walker

(Encyclopedia)Head, Sir Edmund Walker, 1805–68, British governor-general of Canada (1854–61), cousin of Sir Francis Bond Head. An Oxford scholar and tutor, he published several books. His success as lieutenant ...

alcohol

(Encyclopedia)CE5 Alcohols alcohol, any of a class of organic compounds with the general formula R–OH, where R represents an alkyl group made up of carbon and hydrogen in various proportions and –OH represe...

macromolecule

(Encyclopedia)macromolecule, term that may refer either to a crystal such as a diamond, in which the atoms are identical and held by covalent bonds (see chemical bond) of equal strength, or to one of the units that...

peptide

(Encyclopedia)peptide, organic compound composed of amino acids linked together chemically by peptide bonds. The peptide bond always involves a single covalent link between the α-carboxyl (oxygen-bearing carbon) o...

carbonyl group

(Encyclopedia)carbonyl group kärˈbənĭl [key], in chemistry, functional group that consists of an oxygen atom joined by a double bond to a carbon atom. The carbon atom is joined to the remainder of the molecule ...

whiskey

(Encyclopedia)whiskey [from the Gaelic for “water of life”], spirituous liquor distilled from a fermented mash of grains, usually rye, barley, oats, wheat, or corn. Inferior whiskeys are made from potatoes, bee...

formula, in chemistry

(Encyclopedia)formula, in chemistry, an expression showing the chemical composition of a compound. Formulas of compounds are used in writing the equations (see chemical equations) that represent chemical reactions....