Search: Herschel, John in correspondent 
John Herschel Project in contributor 
1840-1849::1842 in date 
Herschel, John in author 
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Showing 61–80 of 125 items

Herschel4025

From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[7 June 1842]
Source of text:
TxU:H/L-0587.9; Reel 1058
Summary:

Enjoyed CH's last letter.

Contributor:
John Herschel Project

Herschel13539

From:
Sir John Herschel
To:
[Sir] Edward Ryan
Date:
[8 June 1842]
Source of text:
TxU:H/L-0765.3; Reel 1089
Summary:

Welcomes ER back to England. Met ER's host, Charles Babbage, at Greenwich yesterday. Wants to visit before ER departs for Geneva, but JH's wife is ill. Based on accounts of Geneva by ER's wife, JH sent three oldest daughters and their governess to spend summer there.

Contributor:
John Herschel Project

Herschel8290

From:
Sir John Herschel
To:
[William Radcliffe Birt]
Date:
[8 June 1842]
Source of text:
RS:HS 19.95
Summary:

Received WB's atmospheric curves yesterday, but too late to report them [at 1842 B.A.A.S. meeting]. Final report will be presented at next [1843] meeting.

Contributor:
John Herschel Project

Herschel8291

From:
Sir John Herschel
To:
William Radcliffe Birt
Date:
[13 June 1842]
Source of text:
RS:HS 19.96
Summary:

Reviews WB's assistance in JH's meteorological investigations as testimonial on behalf of WB's application for position of curator at Kew Observatory.

Contributor:
John Herschel Project

Herschel1667

From:
Sir John Herschel
To:
Alfred Smee
Date:
[15 June 1842]
Source of text:
RS:HS 16.153
Summary:

On the basis of some compounds referred to by AS [see 1842-5-10], JH has now developed a new form of photography using gold as a stimulant; JH calls it the 'Argyrotype'.

Contributor:
John Herschel Project

Herschel3121

From:
Sir John Herschel
To:
C. A. von Steinheil
Date:
[16 June 1842]
Source of text:
RS:HS 17.5 (C: RS:HS 22.124)
Summary:

Thanks for suggestion of gold plating the telescope mirrors. Mentions idea of mounting a reflector horizontally but finds its execution 'insufferable'. Thanks for work on photometric measurement of light of stars. Disagrees on some results. Encloses new photographic specimens.

Contributor:
John Herschel Project

Herschel7948

From:
Sir John Herschel
To:
Charles Wheatstone
Date:
[17 June 1842]
Source of text:
RS:HS 18.149 (C: 22.125)
Summary:

Received prospectus of Kew observatory. Its objectives seem incompatible. It appears better suited as experimental institution. Refer Francis Beaufort to JH's 11 Oct. 1835 letter to Beaufort defining physical observatories.

Contributor:
John Herschel Project

Herschel8540

From:
Sir John Herschel
To:
Friedrich Wilhelm Bessel
Date:
[1842-7]
Source of text:
AdWDDR Bessel 225
Summary:

Informs FB on how to visit Woolwich Arsenal and Dock Yard.

Contributor:
John Herschel Project

Herschel9127

From:
Sir John Herschel
To:
William Whewell
Date:
[1842?-7?]
Source of text:
TC, Camb. Add. Ms.a.20743 (C: RS:HS 22.126)
Summary:

Hopes to arrange a meeting with WW at the invitation of a Mr. Hope. Discusses JH's recent photographic works and sends some photographs of improved quality.

Contributor:
John Herschel Project

Herschel8538

From:
Sir John Herschel
To:
Friedrich Wilhelm Bessel
Date:
[8 July 1842]
Source of text:
AdWDDR Bessel 225 (C: RS:HS 22.127)
Summary:

Detailed arrangements for FB's visit [see JH's 1842-6].

Contributor:
John Herschel Project

Herschel3771

From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[11 July 1842]
Source of text:
TxU:H/L-0587.10; Reel 1058
Summary:

Met Friedrich Bessel at the Manchester B.A.A.S. meeting; invited him to Collingwood, where he expects Bessel in a few days. Enclosed with the letter a specimen of a new photographic process called 'Chrysotype.' Marvels at traveling from Hawkhurst to Manchester round trip (420 miles) in under 23 hours!

Contributor:
John Herschel Project

Herschel2274

From:
Sir John Herschel
To:
Edward Sabine
Date:
[12 July 1842]
Source of text:
RS:HS 15.145 (C: RS:HS 22.128)
Summary:

Discusses time intervals for [magnetic] observation. Sorry a change was ever contemplated. Asks that his opinion be sent to [Humphrey] Lloyd and that ES make the final decision on how to proceed.

Contributor:
John Herschel Project

Herschel4986

From:
Sir John Herschel
To:
F. W. A. Argelander
Date:
[20 July 1842]
Source of text:
RS:HS 22.130
Summary:

Letter of introduction for some friends of JH, to FA in Bonn.

Contributor:
John Herschel Project

Herschel8539

From:
Sir John Herschel
To:
Friedrich Wilhelm Bessel
Date:
[20 July 1842]
Source of text:
AdWDDR Bessel 225 (C: RS:HS 22.129)
Summary:

Comments on expected honor from Prussian government and on British rules against officially accepting it.

Contributor:
John Herschel Project

Herschel9128

From:
Sir John Herschel
To:
William Whewell
Date:
[21 July 1842]
Source of text:
TC, Camb. Add. Ms.a.20753 (C: RS:HS 22.131)
Summary:

Invites WW for a short visit, JH's wife being ill. Thanks WW for paper on cause and effect. Clouds kept JH from photographing a recent solar eclipse.

Contributor:
John Herschel Project

Herschel9129

From:
Sir John Herschel
To:
William Whewell
Date:
[21 July 1842]
Source of text:
TC, Camb. Add. Ms.a.20754 (C: RS:HS 22.131)
Summary:

[Same message as JH's letter of 1842-7-21, but sent to a second location.]

Contributor:
John Herschel Project

Herschel1952

From:
Sir John Herschel
To:
Mr. Collen
Date:
[22 July 1842]
Source of text:
DMC 695A.885.31
Summary:

Goes into considerable detail in providing information about the business organization of the Munich lens makers, and the high quality of their lenses. Urges the benefits of achromatic lenses, and sends MC some specimens of JH's photography.

Contributor:
John Herschel Project

Herschel9025

From:
Sir John Herschel
To:
J. Coates
Date:
[8 August 1842]
Source of text:
Univ.Coll.London SDUK Papers
Summary:

[To JC as Secretary, Society for the Diffusion of Useful Knowledge:] Thanks for offer to send a copy of Augustus De Morgan's Differential and Integral Calculus.

Contributor:
John Herschel Project

Herschel3995

From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[9 August 1842]
Source of text:
TxU:H/L-0587.12.b; Reel 1058
Summary:

Describes the total solar eclipse seen by Francis Baily at Pavia and George Airy at Turin. They were thrilled to witness three purple flames from the blocked sun emerge around the edge of the moon. Thirty more Cape Town sweeps remain to be reduced.

Contributor:
John Herschel Project

Herschel8881

From:
Sir John Herschel
To:
the Athenaeum
Date:
[10 August 1842]
Source of text:
Athenaeum, #773 (Aug. 20, 1842), 748
Summary:

Seeks to clear up confusions about various photographic processes, e.g., the Chrysotype process, developed by JH, about which confusions arose from earlier reports on them in the Athenaeum.

Contributor:
John Herschel Project
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