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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                                calculation, showing the antecedent plausibility
of the experiment.
5. Upon communicating my views to W. now Dr. Whewell
(then, like myself, a resident Fellow of Trinity
College, Cambridge) I found him entirely disposed
to join me in undertaking the experiment. My
first idea had been, to ascertain the rate of a
clock at the top and the bottom of a mine; and
the locality which first occurred to me was the
Ecton Mine in Staffordshire. But it was [?]
settled, on discourse with W. Whewell, that
detached pendulums would be preferable to clock pendulums; and,
the Ecton Mine having proved on examination
to be ill suited to <s>the</s> our purpose, the Dolceath
mine near Camborne in Cornwall was selected
(partly at the <s>selection</s> suggestion of John Taylor Esq<sup>re</sup>).
The Royal Society and the Board of Longitude
most liberally lent to us invariable pendulums,
clocks, and other apparatus, sufficient for the

                            
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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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