Account of pendulum experiments undertaken in the Harton Colliery, for the purpose of determining the mean density of the earth, by G. B. Airy

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                                59. Adopting for the sea, so far as its effects are principally sensible,
(and conceiving the water replaced by an equivalent quantity of ground
<s>(</s>with surface lower than the sea), the elevation - 15 feet, to which
corresponds b = -15-74/1256 = -89/1256 = - .07087, the factor of d
applicable to the depression of the sea beyond the straight line at distance
10 is -2 x .07087/10 = - .014174. The elements for computing
the effects of the other inequalities, and the factors of d, are as follows;
that for 19<sup>*</sup> being inserted by estimation:

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Manuscript details

Author
George Biddell Airy
Reference
PT/54/5
Series
PT
Date
1855
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Account of pendulum experiments undertaken in the Harton Colliery, for the purpose of determining the mean density of the earth, by G. B. Airy, 1855. From The Royal Society, PT/54/5

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