Search: Herschel, John in author 
1830-1839::1839 in date 
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Showing 81–100 of 148 items

Herschel8598

From:
Sir John Herschel
To:
Johann Franz Encke
Date:
[18 June 1839]
Source of text:
AdWDDR Encke 49
Summary:

Asks if JE or the Academy of Sciences wish to participate in the British plan to make worldwide magnetic observations.

Contributor:
John Herschel Project

Herschel8520

From:
Sir John Herschel
To:
D. François J. Arago
Date:
[19 June 1839]
Source of text:
Académie des sciences (Paris)
Summary:

Requests FA's assistance in efforts toward establishing magnetic observatories. Especially recommends an observatory at Algiers. Communication from the R.S.L. will arrive shortly. Comments on biography of William Herschel written by J. B. J. Fourier.

Contributor:
John Herschel Project

Herschel8557

From:
Sir John Herschel
To:
William Cranch Bond
Date:
[19 June 1839]
Source of text:
BostonPubLib Ms.Eng. 190 (1)
Summary:

Invites WB to participate in making magnetic observations. Is sending relevant materials to WB.

Contributor:
John Herschel Project

Herschel4092

From:
Sir John Herschel
To:
Thomas Maclear
Date:
[21 June 1839]
Source of text:
Cape Archives/Maclear Papers File 100
Summary:

J. C. Ross goes to Cape; will establish the proposed Magnetic Observatory for three years. TM should seek a site for the Magnetic Observatory.

Contributor:
John Herschel Project

Herschel8822

From:
Sir John Herschel
To:
William Henry Fox Talbot
Date:
[24 June 1839]
Source of text:
Science Museum Talbt 1/19 (ACCS: RS:HS 25.5.13 & C: TxU:H/L-0476; Reel 1055)
Summary:

Admires L. J. M. Daguerre's process, but hopes to see paper become dominant medium for photographs. Describes new paper JH developed. [Letter continues 6 July.] Experiment with fixed lines in chemical spectra; shows sensitivity of ultraviolet light.

Contributor:
John Herschel Project

Herschel4979

From:
Sir John Herschel
To:
D. François J. Arago
Date:
[25 June 1839]
Source of text:
RS:HS 1.362 & 22.18
Summary:

Regarding L. J. M. Daguerre's photographic experiments.

Contributor:
John Herschel Project

Herschel3987

From:
Sir John Herschel
To:
Caroline Lucretia Herschel
Date:
[26 June 1839]
Source of text:
TxU:H/L-0584.4.b; Reel 1058
Summary:

Has enclosed with the letter 'a letter sketch of the 40 feet [telescope] (as it now stands) made without hands, by Photography.'

Contributor:
John Herschel Project

Herschel2956

From:
Sir John Herschel
To:
Adolphe Quetelet
Date:
[29? June? 1839]
Source of text:
Académie belgique: #13
Summary:

JH's brother-in-law John Stewart, who is delivering this letter, seeks admission to a printing establishment. Asks AQ to aid JS. Lists recently received letters. Glad that AQ has [C. F.] Gauss's apparatus. Discusses an experiment in photography.

Contributor:
John Herschel Project

Herschel4363

From:
Sir John Herschel
To:
Andries Stockenström
Date:
[30 June 1839]
Source of text:
RS:HS 17.18 (C: RS:HS 22.19)
Summary:

Discusses the tensions between AS and Cape Governor George Napier.

Contributor:
John Herschel Project

Herschel13546

From:
Sir John Herschel
To:
[Prince Albert]
Date:
1839-7
Source of text:
TxU:H/L-0768.1 & -0768.2; Reel 1089
Summary:

[Two copies of] Printed letter from R.S.L. announcing proposed system for global magnetic observations. [One copy edited by JH for submission to "Your Highness" with] Request for assistance in adding magnetical observatory to John Caldecott's astronomical observatory in Travancore [India].

Contributor:
John Herschel Project

Herschel1883

From:
Sir John Herschel
To:
D. François J. Arago
Date:
[5 July 1839]
Source of text:
WT 67390.1
Summary:

Is sending FA information about magnetic proceedings.

Contributor:
John Herschel Project

Herschel8823

From:
Sir John Herschel
To:
William Henry Fox Talbot
Date:
[7 July 1839]
Source of text:
Science Museum Talbt 1/20 (ACCS: RS:HS 25.5.14 & C: TxU:H/L-0477; Reel 1055)
Summary:

Recounts experiments with chemicals, spectra, and photographic paper.

Contributor:
John Herschel Project

Herschel8652

From:
Sir John Herschel
To:
John Frederick Goddard
Date:
[10 July 1839]
Source of text:
Manchester Central Library
Summary:

Suggests arrangements for submission of papers, reports, models, etc., to the B.A.A.S. meeting.

Contributor:
John Herschel Project

Herschel1525

From:
Sir John Herschel
To:
John Stewart
Date:
[14 July 1839]
Source of text:
APS B.H435p.10
Summary:

Is willing to be a witness to some battery experiments by J. P. Gassiot, but JH is busy, mostly with house hunting, and so may not be available.

Contributor:
John Herschel Project

Herschel3666

From:
Sir John Herschel
To:
Richard Sheepshanks
Date:
[14 July 1839]
Source of text:
RS:HS 16.8 (C: RS:HS 25.9.3)
Summary:

On the difficulties of writing his book [Cape Results]. Feels he has been at everyone's disposal but his own and is finding notes made at the Cape difficult to decipher. Asks RS to report to him from Germany on the state of telescope manufacturing there and on the progress of F. G. W. Struve's great refractor.

Contributor:
John Herschel Project

Herschel3364

From:
Sir John Herschel
To:
Edward Sabine
Date:
[19 July 1839]
Source of text:
RS Sa.648
Summary:

Sends plans for and detailed explanation of device to suspend cot or couch in ship so as to 'destroy' ship's motion and alleviate seasickness.

Contributor:
John Herschel Project

Herschel2188

From:
Sir John Herschel
To:
James Clark Ross
Date:
[19 July 1839]
Source of text:
RS:HS 14.432 (C: RS:HS 25.13.5)
Summary:

Describes method of suspending furniture in a ship such that the furniture is less influenced by the ship's motion.

Contributor:
John Herschel Project

Herschel843

From:
Sir John Herschel
To:
Margaret Brodie Herschel
Date:
[20 July 1839]
Source of text:
JHS 3.17
Summary:

About JH's travels and viewing of prospective homes to which to move; saw Collingwood.

Contributor:
John Herschel Project

Herschel3158

From:
Sir John Herschel
To:
James Clark Ross
Date:
[27 July 1839]
Source of text:
RS Sa.649
Summary:

Because of R.S.L. council meeting on Thursday, suggests Friday meeting with JL and several others.

Contributor:
John Herschel Project

Herschel12570

From:
Sir John Herschel
To:
Hans Christian Oersted
Date:
[29 July 1839]
Source of text:
RS:HS 22.21
Summary:

Apologizes for having been too busy to sit for a portrait as proposed, thanks HO for his poems, and describes JH's current experiments related to photography.

Contributor:
John Herschel Project
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