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MACCULLAGH, JAMES (1809-1847)

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Originally appearing in Volume V17, Page 207 of the 1911 Encyclopedia Britannica.
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MACCULLAGH, See also:JAMES (1809-1847) , Irish mathematician and physicist, was See also:born in 1809, near See also:Strabane, See also:Ireland. After a brilliant career at Trinity See also:College, See also:Dublin, he was elected See also:fellow in 1832. From 1832 to 1843 he held the See also:chair of See also:mathematics; and during his See also:tenure of this See also:post he improved in a most marked manner the position of his university as a mathematical centre. In 1843 he was transferred to the chair of natural See also:philosophy. Overwork, mainly on subjects beyond the natural range of his See also:powers, induced See also:mental disease; and he died by his own See also:hand in See also:October 1847. His See also:Works were published in 1880. Their distinguishing feature is the See also:geometry—which has rarely been applied either to pure space problems or to known See also:physical questions such as the rotation of a rigid solid or the properties of See also:Fresnel's See also:wave-See also:surface with such singular elegance; in this respect his See also:work takes See also:rank with that of See also:Louis See also:Poinsot. One specially remarkable geometrical See also:discovery,of MacCullagh's is that of the "modular See also:generation of surfaces of the second degree "; and a noteworthy contribution to physical See also:optics is his " theorem of the polar See also:plane." But his methods, which, in less known subjects, were almost entirely tentative, were altogether inadequate to the See also:solution of the more profound physical problems to,which his See also:attention was mainly devoted, such as the theory of See also:double See also:refraction, &c. See G. G. See also:Stokes's " See also:Report on Double Refraction " (B. A.

Report, 1862).

End of Article: MACCULLAGH, JAMES (1809-1847)

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