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sucrose

(Encyclopedia)sucrose so͞oˈkrōs [key], commonest of the sugars, a white, crystalline solid disaccharide (see carbohydrate) with a sweet taste, melting and decomposing at 186℃ to form caramel. It is known commo...

Porter, George, Baron Porter of Luddenham

(Encyclopedia)Porter, George, Baron Porter of Luddenham, 1920–2002, British chemist, b. Stainforth, England, grad. Leeds Univ., Ph.D. Cambridge, 1949. After serving as a radar officer during World War II, he did ...

photocopying

(Encyclopedia)photocopying, process whereby written or printed matter is directly copied by photographic techniques. Generally, photocopying is practical when just a few copies of an original are needed. When many ...

Renoir, Pierre Auguste

(Encyclopedia)Renoir, Pierre Auguste rənwärˈ [key], 1841–1919, French impressionist painter and sculptor, b. Limoges. Renoir went to work at the age of 13 in Paris as a decorator of factory-made porcelain, co...

radiation

(Encyclopedia)radiation rāˌdēāˈshən [key], term applied to the emission and transmission of energy through space or through a material medium and also to the radiated energy itself. In its widest sense the te...

ozone

(Encyclopedia)ozone ōˈzōn [key], an allotropic form of the chemical element oxygen (see allotropy). Pure ozone is an unstable, faintly bluish gas with a characteristic fresh, penetrating odor. The gas has a dens...

variable star

(Encyclopedia)variable star, star that varies, either periodically or irregularly, in the intensity of the light it emits. Other physical changes are usually correlated with the fluctuations in brightness, such as ...

Dobson, Austin

(Encyclopedia)Dobson, Austin (Henry Austin Dobson), 1840–1921, English poet and essayist. From 1856 to 1901 he was employed in the Board of Trade. His volumes of light verse include Vignettes in Rhyme (1873), Pro...

Costa Mesa

(Encyclopedia)Costa Mesa kŏsˈtə māˈsə [key], city (2020 pop. 111,918), Orange co., S Calif., on the Pacific ...

Corona, city, United States

(Encyclopedia)Corona kərōˈnə [key], city (2020 pop. 157,136), Riverside co., S Calif.; inc. 1896. The c...