Item 132 - Letter from Augustus De Morgan

Identity area

Reference code

Add. MS a/202/132

Title

Letter from Augustus De Morgan

Date(s)

  • 23 Feb. 1857 (Creation)

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Extent and medium

4 pp

Context area

Name of creator

Whewell, William (1794-1866), college head and writer on the history and philosophy of science
(1794-1866)

Repository

Trinity College Library, Cambridge

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7 Camden Street, N.W. - ADM has found 'a mechanical mistake which I find in all writers - Poisson states it broadly in his last edition. I take the case of it which belongs to a point vdv = Xdx + Ydy + Zdz throwing out reactions, which produce no effect', which he then works out. In a postscript he shows a simple construction to find the centre of gravity of a four sided figure.

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