From:
Sir John Herschel
To:
Henry Kater
Date:
[1821 to 1822]
Source of text:
RS:HS 19.17 (C: RS:HS 25.13.21)
Summary:
Sends set of William Herschel's duplicated papers. Curious results 'examining the rings,' but bad weather has hampered experiments. Correction of spherical aberration. JH is using J. d'Alembert's Opuscules. Image of Alpha Lyrae.
Contributor:
John Herschel Project