Search: Herschel, John in correspondent 
Selwyn, William in correspondent 
No in transcription-available 
1860-1869 in date 
Sorted by:

Showing 61–64 of 64 items

Herschel2612

From:
Sir John Herschel
To:
William Selwyn
Date:
[23 October 1869]
Source of text:
RS:HS 24.288
Summary:

Is working on a compilation of the measures of double stars. If [Rudolf] Wolf's period of 11.11 years is correct, why should 1810-11, a minimum, mark the first observations of solar spots?

Contributor:
John Herschel Project

Herschel2613

From:
William Selwyn
To:
Sir John Herschel
Date:
[27 October 1869]
Source of text:
RS:HS 15.506
Summary:

Has autographs that display the activity of the sun. Sends sonnets he has written. Asks JH to mention distribution of nebulae at R.A.S.

Contributor:
John Herschel Project

Herschel2615

From:
Sir John Herschel
To:
William Selwyn
Date:
[1869-11?]
Source of text:
RS:HS 15.514
Summary:

Discusses discrepencies between his observations for September and WS's photograph. It seems the new spots result from Jupiter being in opposition.

Contributor:
John Herschel Project

Herschel2616

From:
Sir John Herschel
To:
William Selwyn
Date:
[3 November 1869]
Source of text:
RS:HS 24.292
Summary:

Describes the similarities between JH's sketches and WS's photographs of sunspots. Has greater faith in own observations. Wishes WS would add Julian dates. Sends Professor [George?] Morton's photographs.

Contributor:
John Herschel Project
Author
Addressee
Correspondent
Date
Document type
Contributor
Transcription available