From:
James David Forbes
To:
Sir John Herschel
Date:
[6 April 1842]
Source of text:
RS:HS 7.301
Summary:
Would like to know the composition of the fluid in JH's actinometers.
Contributor:
John Herschel Project
Showing 1–2 of 2 items
Would like to know the composition of the fluid in JH's actinometers.
Instructions for preparing liquid for the actinometer. Describes 'very strange' experiments on the spectrum as well as an 'unusual' cloud formation.