Laplace, Pierre Simon, marquis de, 1749-1827 · Boston, Hillard, Gray, Little, and Wilkins · leaf 146
same equinox. We shall name these three new axes th e principal axes* This being premised, [K37viii] Let xt, y /5 zt, be the co-ordinates of m referred, first , to the line drawn from the origin of the co-ordinates, to the vernal equinox, the positive values of x being taken in the direction of… … P the angle BCG , which the first principal axis C G, makes with C B ; the angle, which the second principal axis C H makes with the same line C B, is — (— <p. f (S2) Let K be the projection of the place of the body m upon the plane of the ecliptic, in the above figure, the co-ordinates of this…
Celestial mechanics · Tides · Capillarity
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![An illustration from L'optique divisée en trois livres : ou, l'On démontre d'une maniere aisée tout ce qui regarde 1. la propagation & les proprietez de la lumiere. 2. La vision. 3. La figure & la disposition des verres qui servent à la perfefectionner [sic] (1682)](https://img.insideoutlibrary.com/img/200/ia-loptiquedivise00ango-341-38.webp)
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