From:
Sir John Herschel
To:
Edward Sabine
Date:
[1864-6-9 or later]
Source of text:
TxU:H/L-0360.1; Reel 1054
Summary:
Pendulum experiments to be conducted at stations of Great Indian Trigonometrical Survey.
Contributor:
John Herschel Project
Showing 1–4 of 4 items
Pendulum experiments to be conducted at stations of Great Indian Trigonometrical Survey.
Plans to confer with [J. T.] Walker and F. A. T. Winnecke from Pulkovo to learn of Russian pendulum experiments before reporting to R.S.L. council. J. H. Pratt's measurement of polar axis and theory about earth's center of gravity.
Had hoped to attend ES's soiree, but has influenza. Praises ES's report on Mr. McClintock's magnetic observations at Port Barrow.
Gives reasons for and discusses technicalities of supporting pendulum experiments at astronomical and geodesical stations in Indian trigonometrical survey.