The surgical diseases of the ear / by Prof. von Troltsch. The mechanism of the ossicles and the membrana tympani / by Prof. Helmholtz ; translated from the German by James Hinton.

  • Tröltsch, Anton Friedrich, Freiherr von, 1829-1890.
Date:
1874
Catalogue details

Licence: Public Domain Mark

Credit: The surgical diseases of the ear / by Prof. von Troltsch. The mechanism of the ossicles and the membrana tympani / by Prof. Helmholtz ; translated from the German by James Hinton. Source: Wellcome Collection.

Provider: This material has been provided by Royal College of Physicians, London. The original may be consulted at Royal College of Physicians, London.

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    rui'ther, it follows from equation (2), (.+xco.„K.+(f.y] = x=(|y; or 1^ + X cos a ( (lz\ /X3 _ (,.3 + X cos a)2 \clr} This is an elliptic integral, which we bring to the normal form if we put r = V' 2X sin - cos w, dr = ■v/ aX sin - sin w dw; z thus _ b — -Z sin- — sm w sin- w or, if we use Legendre's notation, dw = / — - »^ V' I — sin^ w y I — K- sm 10 and put then = sm- z - aJ \ {2E2y — Fw] + const Simultaneously, we easily find the length of the arc of the radial fibres.