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Eccentricity of the Sextant by Frederic Furbish, 1893

Eccentricity of the Sextant by Frederic Furbish, 1893, Page 95

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Record these values of A and B in their proper places on the last sheet. We next form the products (Am) and (Bn) logarithmically. Turn to the M column; the first number is 139.63 logarithm 2.14498. The logarithm of A is 9.96766. Adding we get for the logarithm of Am 2.11264. Record this on the second line of the Am column under the sub-head "Logarithm" and proceed in a similar manner with the rest. After all of the Am logarithms have been formed, turn to the (n) column on the second sheet of the set. The first number is 0.05 logarithm 8.6852; add to this the logarithm of B 9.8238 (always reduce the logarithms of A and B to the proper number of places before using) and the sum is 8.5090. Record this on the second line of the (Bn) column under the sub-head "logarithm"
 
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