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Eccentricity of the Sextant by Frederic Furbish, 1893

Eccentricity of the Sextant by Frederic Furbish, 1893, Page 77

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+ 2 sin (1/2) ∝ ' . z , the values of ε thus obtained being expressed, of course, in circular measure. To reduce them to seconds of arc in gradual measure we must multiply by 206264.8 The equations (4) also determine the latitude (x) in circular measure. 4. Practical determination of eccentricity. Under this head I shall endeavor to explain the work done in Part II of this thesis and shall use it throughout as a means of illustration. (a) Observations. The observations necessary may be divided into three classes 1. For index error 2. Time observations and 3. Circum-meridian altitude observations. It is beyond the province of this thesis to discuss the theory and prac-
 
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