From:
Edward Joshua Cooper
To:
Sir John Herschel
Date:
[2 February 1860]
Source of text:
RS:HS 5.294
Summary:
Regarding modifications to the water eye piece of his telescope.
Contributor:
John Herschel Project
Showing 1–2 of 2 items
Regarding modifications to the water eye piece of his telescope.
On the usefulness of Stephen's Writing Fluid to stop the sun's excess of light at large apertures in the telescope.