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dimension, in mathematics
(Encyclopedia)dimension, in mathematics, number of parameters or coordinates required locally to describe points in a mathematical object (usually geometric in character). For example, the space we inhabit is three...National Road
(Encyclopedia)National Road, U.S. highway built in the early 19th cent. At the time of its construction, the National Road was the most ambitious road-building project ever undertaken in the United States. It final...Collins, Michael
(Encyclopedia)Collins, Michael, 1890–1922, Irish revolutionary leader. He spent the years from 1907 to 1916 in England, during which period he joined the Fenian movement. He took part in the Easter Rebellion in D...Zuckerberg, Mark Elliot
(Encyclopedia)Zuckerberg, Mark Elliot, 1984–, American computer programmer and business executive, b. Dobbs Ferry, N.Y. A computer prodigy as a child, he entered Harvard in 2002 and two years later co-founded The...Bithynia
(Encyclopedia)Bithynia bĭthĭnˈēə [key], ancient country of NW Asia Minor, in present-day Turkey. The original inhabitants were Thracians who established themselves as independent and were given some autonomy a...Chopin, Frédéric François
(Encyclopedia)Chopin, Frédéric François frādārēkˈ fräNswäˈ shôpăNˈ [key], 1810–49, composer for the piano, b. near Warsaw, of French and Polish parentage. His lyrical, often melancholy, compositions ...Eddy, Mary Baker
(Encyclopedia)Eddy, Mary Baker, 1821–1910, founder of the Christian Science movement, b. Bow, N.H. As physical frailty prevented her regular school attendance, she spent the early part of her education learning a...conservation laws
(Encyclopedia)conservation laws, in physics, basic laws that together determine which processes can or cannot occur in nature; each law maintains that the total value of the quantity governed by that law, e.g., mas...eclipse
(Encyclopedia) CE5 A. Lunar eclipse B. Solar eclipse eclipse ēklĭpsˈ, ĭ– [key] [Gr.,=failing], in astronomy, partial or total obscuring of one celestial body by the shadow of another. Best known are the lu...dating
(Encyclopedia)dating, the determination of the age of an object, of a natural phenomenon, or of a series of events. There are two basic types of dating methods, relative and absolute. In relative dating, the tempor...Browse by Subject
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