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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                                simultaneous observation of a pendulum above
and one below. And the Board of Admiralty
lent us box and pocket chronometers, to be used
principally for the comparison of the upper and lower
clocks.
6. About the end of May 1826 we proceeded
to Dolceath, assisted by the friendly introduction of
the late Davies Gilbert Esq and of Dr. Paris,
and we received from the resident authorities of
the mine every possible assistance to our experiment; and from
Lord De Dunstanville, E.W.W. Pendarves
Esq, and other gentlemen of the country the
most hospitable attention to our personal comforts.
And, in spite of the labours and misfortunes of
the Cornish enterprise, I do not doubt that they
are regarded by my companion (as well as by my
myself) as among the most interesting <s>of</s> in our
lives. Stations were provided for us at the surface
and near the lowest part of the mine; the latter being
at a short distance from the South Shaft or Harriet
                            
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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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