From:
Sir John Herschel
To:
B. W. S. Vallack
Date:
[16 February 1866]
Source of text:
RS:HS 17.417b (C: RS:HS 24.141)
Summary:
Suggests weaknesses in BV's plans for a binocular telescope.
Contributor:
John Herschel Project
Showing 1–1 of 1 item
Suggests weaknesses in BV's plans for a binocular telescope.