Cursory remarks on some parts of a work, entitled Studies of nature ; originally written by M. de Saint Pierre, and translated into English by ... Henry Hunter / [William Cole].

  • Cole, William, active 1807.
Date:
1807
Catalogue details

Licence: Public Domain Mark

Credit: Cursory remarks on some parts of a work, entitled Studies of nature ; originally written by M. de Saint Pierre, and translated into English by ... Henry Hunter / [William Cole]. Source: Wellcome Collection.

    24/80 (page 14)
    as the arc AN; but an is greater than AN, there^ fore the degrees toward the pole in the oblate spheroid are greater than those of the sphere. In order to accommodate our ideas to those of our author, and to take up the consideration of the subject in his own way, we have in the foie- going cases, supposed the periphery of the ellip¬ sis to cut that of the circle, in the points A and B. This however, is contrary to the fact; foi the equatorial diameter being the same in both, and the axis of the spheroid being less than that of the sphere, the periphery of the ellipsis must fall wholly within the circle, and they can only touch each other at the extremities of the equatorial diameter. Let us, therefore, endeavour to illus¬ trate the subject in a different way, agreeaeiy to the known method of finding the latitude of any place. Here, letENQR [Fig. 4] represents; meri¬ dian on the sphere, and EwQr a meridian on the spheroid, where the equatorial diameter of botb will be represented by EQ, and the axis of the sphere and spheroid by NR, and nr, respect-* ively. Let S represent the sun, or a known star, which in order to simplify the illustration, we