From:
Giovanni Antonio Plana
To:
Sir John Herschel
Date:
[24 March 1825]
Source of text:
RS:HS 13.414
Summary:
Is helping another scientist bring to publication a work on triangulation in the Alps. Comments on JH's idea of suspending an extremely long plumb bob at a particular precipice in the Alps [Foucault pendulum?]. GP does not believe the results would warrant the expense. Comments on the floating collimator [see JH's 1825-1-14], noting that he does not find it very helpful.
Contributor:
John Herschel Project