From:
Sir John Herschel
To:
Edward Sabine
Date:
[20 February 1847]
Source of text:
RS:HS 15.203 (ACCS: RS:HS 25.7.4; C: RS:HS 22.303; RS MM 11.188)
Summary:
Has discovered a flaw in the theory of actinometer observations. Realizes that JH's actinometer observations at the Cape may be useless and that observations made at Government and East India observatories should be suspended.
Contributor:
John Herschel Project