Search: Herschel, John in author 
1840-1849::1842 in date 
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Showing 41–60 of 136 items

Herschel1546

From:
Sir John Herschel
To:
Thomas Makdougall Brisbane
Date:
[2 January 1842]
Source of text:
BL Aaa 32565.164 (draft: RS:HS 5.104 & C: 22.107)
Summary:

A strong letter on behalf of the provision of financial support for Professor [James David] Forbes, along with JH's personal statement of belief in the need to free distinguished scientists from teaching duties.

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

Herschel170

From:
Sir John Herschel
To:
George Biddell Airy
Date:
1842-1-5 or later
Source of text:
RGO 6.693.101
Summary:

Has passed on GA's note to Edward Sabine; cannot write more because his hand shakes too much, having just made a snow-man for the children.

Contributor:
John Herschel Project

Herschel171

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[17 January 1842]
Source of text:
RGO 6.693.102
Summary:

Sends a letter from Humphrey Lloyd for GA's comments.

Contributor:
John Herschel Project

Herschel173

From:
Sir John Herschel
To:
George Biddell Airy
Date:
1842-1-18 or later
Source of text:
RGO 6.693.105
Summary:

Thanks GA for his comments [see GA's 1842-1-18]; hopes that GA would be willing to have such statements, and other similar statements, made public.

Contributor:
John Herschel Project

Herschel175

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[19 August 1842]
Source of text:
RGO 6.693.108
Summary:

Asks GA's opinion as to whether Ordinance observatories should make their magnetic observations on a 3-minute or 5-minute system.

Contributor:
John Herschel Project

Herschel176

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[25 August 1842]
Source of text:
RGO 6.693.110 (C: RGO 6.675.327; draft not in JH's hand RS:HS 1.107 & 22.132)
Summary:

Is organizing a committee to revise the instructions for observers at magnetic observatories; GA is on it.

Contributor:
John Herschel Project

Herschel1874

From:
Sir John Herschel
To:
William Benjamin Carpenter
Date:
[2 February 1842]
Source of text:
WT 67597.2
Summary:

Declines to review WC's recent work, and then JH justifies his position for the rest of the letter.

Contributor:
John Herschel Project

Herschel1896

From:
Sir John Herschel
To:
Bridget Taylor
Date:
[17 September 1842]
Source of text:
WT 64710
Summary:

Informs BT of the birth of JH's daughter Julia. Mother and child are both doing well.

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

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

Herschel2276

From:
Sir John Herschel
To:
Edward Sabine
Date:
[1842]
Source of text:
RS:HS 15.147
Summary:

Encloses [G. B.] Airy's letter, which he thinks should accompany [Humphrey] Lloyd's reply regarding magnetism. Thinks all Physical Committee members must be made aware of new developments.

Contributor:
John Herschel Project

Herschel2277

From:
Sir John Herschel
To:
Edward Sabine
Date:
1842
Source of text:
RS:HS 15.148 (C: RS:HS 22.144)
Summary:

Discusses term and extra magnetic observations with regard to [Humphrey] Lloyd's letter. Would prefer to keep them separate, but feels no harm will come from keeping them together.

Contributor:
John Herschel Project

Herschel279

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[1 September 1842]
Source of text:
RGO 6.112.75 (ACCS: RS:HS 25.6.11)
Summary:

About eclipse observations of 1842, together with JH's speculations about the existence of an atmosphere around the sun. Enclosed is an eclipse drawing by Francis Baily.

Contributor:
John Herschel Project

Herschel2959

From:
Sir John Herschel
To:
Adolphe Quetelet
Date:
[29 April 1842]
Source of text:
Académie belgique: #17
Summary:

Stresses importance of development and phases of periodic phenomena on earth's surface. Magnitudes of stars are the only observations JH is doing. Asks for help in planning trip on continent for three of his daughters and their governess.

Contributor:
John Herschel Project

Herschel2960

From:
Sir John Herschel
To:
Adolphe Quetelet
Date:
[19 May 1842]
Source of text:
Académie belgique: #18
Summary:

Thanks for assistance in preparing trip. JH's daughters will probably not stay in Brussels long. Mentions his first engraving for Cape observations of nebulae is to be engraved this very day. Three quarters of his reductions of the southern sweeps are completed.

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

Herschel3138

From:
Sir John Herschel
To:
William Robert Grove
Date:
[15 January 1842]
Source of text:
RI
Summary:

Sorry that JH can only send 'very poor' photographic process specimens.

Contributor:
John Herschel Project

Herschel3209

From:
Sir John Herschel
To:
Edward Sabine
Date:
[28 January 1842]
Source of text:
RS MM 11.166
Summary:

Agrees with suggestions made by ES concerning the publication of meteorological observations.

Contributor:
John Herschel Project

Herschel324

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[7 November 1842]
Source of text:
RGO 6.203.315
Summary:

Unwilling to come to a meeting as JH anticipates the return of some of his children from the continent; seems considerable confusion as to who is to do what about star catalogues [see GA's 1841-7-27].

Contributor:
John Herschel Project
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