From:
Sir John Herschel
To:
Unidentified
Date:
[1864-1 or later]
Source of text:
TxU:H/L-0602.2; Reel 1089
Summary:
Encloses copy of JH's essay entitled The Yard, the Pendulum, & the Metre... (1863). Speculates on causes for deviation in pendulum measurements. Recommends using torsion gravimeters in 'proposed operation.'
Contributor:
John Herschel Project