From:
George Biddell Airy
To:
Sir John Herschel
Date:
[9 September 1843]
Source of text:
RS:HS 1.128 (C: RGO 6.340.353)
Summary:
Regarding the storage of the Standard weights and measures.
Contributor:
John Herschel Project
Showing 1–3 of 3 items
Regarding the storage of the Standard weights and measures.
Describes some available glass discs, which might do for making lenses for a large refracting telescope [see GA's 1843-8-30].
Requires information on an actinometer.