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Carrickfergus

(Encyclopedia) Carrickfergus Carrickfergus kărˌĭkfûrˈgəs [key], town and district, E Northern Ireland, on the shore of…

steam engine

(Encyclopedia) CE5 Steam engine steam engine, machine for converting heat energy into mechanical energy using steam as a medium, or working fluid. When water is converted into steam it expands,…

coenzyme

(Encyclopedia) coenzymecoenzymekō-ĕnˈzīm [key], any one of a group of relatively small organic molecules required for the catalytic function of certain enzymes. A coenzyme may either be attached by…

Kastler, Alfred

(Encyclopedia) Kastler, Alfred, 1902–84, German-born French physicist, Ph.D. Univ. of Bordeaux, 1936. Kastler was a lecturer at Clermont-Ferrand Univ. (1936–38), professor at the Univ. of Bordeaux (…

flywheel

(Encyclopedia) flywheel, heavy metal wheel attached to a drive shaft, having most of its weight concentrated at the circumference. Such a wheel resists changes in speed and helps steady the rotation…

Boltwood, Bertram Borden

(Encyclopedia) Boltwood, Bertram Borden, 1870–1927, American chemist and physicist, b. Amherst, Mass., grad. Sheffield Scientific School, Yale, 1892. After graduate study at Leipzig and Yale (Ph.D.,…

Bridges, Simon Joseph

(Encyclopedia) Bridges, Simon Joseph, 1976–, New Zealand lawyer and politician, b. Auckland. A Maori and a member of the conservative National party, Bridges was a lawyer and prosecutor before he was…

nitric oxide

(Encyclopedia) nitric oxide or nitrogen monoxide, a colorless gas formed by the combustion of nitrogen and oxygen as given by the reaction: energy + N2 + O2 → 2NO; m.p. −163.6℃; b.p. −151.8℃. Nitric…

metabolism

(Encyclopedia) metabolism, sum of all biochemical processes involved in life. Two subcategories of metabolism are anabolism, the building up of complex organic molecules from simpler precursors, and…

degree-day

(Encyclopedia) degree-day, a unit of measure used to estimate the fuel and power requirements in heating and cooling a building; it is equal to a difference of 1 degree between the outdoor daily…