Search: letter in document-type 
Herschel, John in author 
1840-1849::1843::07 in date 
Sorted by:

Showing 1–11 of 11 items

Herschel6125

From:
Sir John Herschel
To:
Francis Baily
Date:
[4 July 1843]
Source of text:
RS:HS 3.251 (C: RS:HS 25.8.56)
Summary:

Has received the maps. Gives F. W. Bessel's views on the re-arrangement of the constellations which has been proposed. Comments on FB's memorandum.

Contributor:
John Herschel Project

Herschel4265

From:
Sir John Herschel
To:
William Henry Smyth
Date:
[9 July 1843]
Source of text:
RS:HS 22.161
Summary:

Sends calculations of Gamma Virginis and determines its eccentricity. Believes the orbit is highly elongated, like that of a comet.

Contributor:
John Herschel Project

Herschel8748

From:
Sir John Herschel
To:
William Parsons (Lord Rosse)
Date:
[17 July 1843]
Source of text:
Rosse Papers K2.1
Summary:

Declines WP's invitation to attend Cork B.A.A.S. meeting and afterwards to visit WP and to see his reflecting telescopes. Informs WP that [C. A. von] Steinheil had written JH about a process of 'Electro-gilding' mirrors for telescopes.

Contributor:
John Herschel Project

Herschel6531

From:
Sir John Herschel
To:
Edward Joshua Cooper
Date:
[18 July 1843]
Source of text:
RS:HS 22.162
Summary:

Comments on calculation of orbit of Gamma Virginis; requests any observations EC has of that star.

Contributor:
John Herschel Project

Herschel407

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[18 July 1843]
Source of text:
RGO 6.193.203
Summary:

Finds GA's measurements of Gamma Virginis far away from JH's own, and instructs GA in the best way to measure double star positions.

Contributor:
John Herschel Project

Herschel4246

From:
Sir John Herschel
To:
William Henry Smyth
Date:
[18 July 1843]
Source of text:
RS:HS 22.163
Summary:

Devises and suggests mode of micrometric measurement of angles.

Contributor:
John Herschel Project

Herschel1949

From:
Sir John Herschel
To:
Unidentified
Date:
[18 July 1843]
Source of text:
DMC 695A.885.28
Summary:

Refers to a variety of salts and their reaction to light in the production of photographs. JH hopes that [?] still intends to publish his work in this area.

Contributor:
John Herschel Project

Herschel8298

From:
Sir John Herschel
To:
[William Radcliffe Birt]
Date:
[20 July 1843]
Source of text:
RS:HS 19.103
Summary:

Received copies of barometer observations. Searching for original data (lists stations) that JH sent to WB. Invites additions to JH's report. Please send account of expenses.

Contributor:
John Herschel Project

Herschel8299

From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[21 July 1843]
Source of text:
RS:HS 19.104
Summary:

Yesterday's letter was mistakenly sent to WB's former address. Sends copy.

Contributor:
John Herschel Project

Herschel1098

From:
Sir John Herschel
To:
Francis Baily
Date:
[23?] July 1843
Source of text:
RS:HS 25.8.57
Summary:

Was unable to visit FB; JH is suggesting some options for FB dealing with the star map, and whether it needs to go to the B.A.A.S. for approval.

Contributor:
John Herschel Project

Herschel8300

From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[28 July 1843]
Source of text:
RS:HS 19.106 (C: 19.105, 22.166, & 22.167)
Summary:

JH's theory of barometric waves. Comparison with ocean tides. Non-trade winds follow laws of periodicity and are predictable, accounting for previously unexplained phenomena. Attributes rotating storms to interference of two or more wave trains. Will propose WB as director of new B.A.A.S. project to discover laws of weather behavior. Sends payment for WB's expenses. Never saw anything more beautiful than WB's 'Symmetrical Barometric Curve.'

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