Search: Herschel, John in author 
1820-1829::1825 in date 
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Showing 120 of 59 items

From:
Sir John Herschel
To:
Charles Babbage
Date:
[1825?]
Source of text:
RS:HS 2.366
Summary:

Is sorry he will be unable to see him. Is sending copies of their paper for distribution.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
James South
Date:
[1825?]
Source of text:
RS:HS 16.479 (C: RS:HS 25.13.27)
Summary:

Has examined Edward Sabine's transit measurements; finds them unproblematic.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
James South
Date:
[1825]
Source of text:
RS:HS 16.481 (C: RS:HS 25.13.26)
Summary:

Has represented JS's interests as best JH can regarding JS's proposal. Describes himself as unskillful in such representations.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
James South
Date:
[1825?]
Source of text:
RS:HS 16.482 (C: RS:HS 25.13.28)
Summary:

Defends Edward Sabine's transit observations, noting that JH supports them on practical rather than theoretical grounds.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Francis Lunn
Date:
5 January [1825]
Source of text:
RS:HS 11.412verso
Summary:

Concludes original letter lost. Impossible to do any further work for the Encyclopaedia Metropolitana. Hopes FL will write the article.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Giovanni Antonio Plana
Date:
[14 January 1825]
Source of text:
RS:HS 13.413 (C (inc): RS:HS 20.195)
Summary:

Apologizes for delay in writing. Describes JH's travels across Europe back to England. Is sending GP copies of JH's papers in physics, mathematics, and astronomy, especially double stars. Describes a new instrument, a floating collimator, described by Henry Kater at the R.S.L. [Rough notes for a later letter on the back of part of this one.]

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Giovanni B. Amici
Date:
[14 January 1825]
Source of text:
RS:HS 1.334 & 20.194
Summary:

Thanking him for his friendly reception when in Italy. Is sending GA journals and pamphlets likely to be of interest to him. Regarding various papers on the electrization of mercury. Please send details of Giuseppe Bianchi's barometer.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Wilhelm Struve
Date:
[24 January 1825]
Source of text:
RS:HS 17.106a (C: RS:HS 20.196)
Summary:

Asks WS for account of the performance of his new [Josef] Fraunhofer telescope. Corroborates WS's double star motion data, except for 70 Ophiuchi, where JH and [James] South find no motion. Asks for observational targets and urges care in WS's observational technique. Mentions WS's intention to undertake celestial zone with [F. W.] Bessel. Describes [Henry] Kater's 'floating collimator.'

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Josef von Fraunhofer
Date:
[27 January 1825]
Source of text:
RS:HS 19.5
Summary:

JF was elected associate of Astronomical Society. Will send Society's Transactions and JH's 'Absorption of Light.' W. H. F. Talbot delivered JF's 'Crown glass Prism.' JH presented J. G. Soldner's observations to Society and proposed Soldner as associate.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Ritchie
Date:
[27 January 1825]
Source of text:
RS:HS 14.347 (C: RS:HS 20.197)
Summary:

Presented WR's paper on a new photometer to R.S.L. Discusses how objections may be avoided. Believes [John] Leslie's photometer should be thrown aside.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Niccolo Cacciatore
Date:
[31 January 1825]
Source of text:
RS:HS 5.134
Summary:

News since he left Palermo. Comments on the pamphlet NC recently sent him. Has to inform him that he has been elected an Associate of the Astronomical Society.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Teodoro Monticelli
Date:
[6 February 1825]
Source of text:
RS:HS 12.362 (C: 20.199)
Summary:

Outlining his Italian travels after leaving Naples. Had to return home as business pressed.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Ritchie
Date:
[19 February 1825]
Source of text:
RS:HS 20.200
Summary:

Will present alterations of WR's paper to R.S.L. [see JH's 1825-1-27]. Asks if he may describe the similarities between WR's photometer and an instrument JH used in Italy and Sicily.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
James South
Date:
[10 March 1825]
Source of text:
RS:HS 16.434 (C: 20.201)
Summary:

Making, reducing, and publishing double star work is very difficult and, because of Wilhelm Struve's recent endeavors, less pressing than it had been. Mentions various doubles. Expresses interest in JS's plan to purchase a very large refractor.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Edward Sabine
Date:
[20 March 1825]
Source of text:
RS:HS 15.1 & 20.202
Summary:

Comments on ES's measurement [in his Account of Experiments to Determine the Figure of the Earth] indicating 'the increase of the fraction expressing the earth's compression.' Predicts that ES's result will cause a 'sensation,' but does not commit himself to it.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
William Wallace
Date:
23] March [1825
Source of text:
RS:HS 20.203
Summary:

Let Josef Fraunhofer make WW's whole transit instrument, and mural circle as well. Attests to Fraunhofer's artistry. Germans will soon leave no stars to discover. Wishes someone would import G. F. Reichenbach's meridian circle and use it on F. W. Bessel's plan. Suggests WW order clocks from [Robert] Molyneux or [William] Hardy.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Edward Sabine
Date:
[3 April 1825]
Source of text:
RS:HS 15.2 (C: RS:HS 20.204)
Summary:

Responds to ES's proposal to conduct a series of meteorological observations from the peak of Teneriffe. Promises to bring it before the Board of Longitude for consideration for support.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Edward Sabine
Date:
[5 April 1825]
Source of text:
RS:HS 15.4 & 20.205
Summary:

Responds to ES's letter of 1825-4-4, stating that JH now understands that ES will proceed with the Teneriffe observations only if funds are provided. Praises Sabine's previous work.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Edward Sabine
Date:
[8 April 1825]
Source of text:
RS:HS 15.6 (C: RS:HS 20.206)
Summary:

On 1825-4-7 presented ES's proposal for experiments at Teneriffe to the Board of Longitude, which judged the experiments not sufficiently relevant to the Board's concerns. Offers to seek endorsement from the R.S.L.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
James South
Date:
[16 April 1825]
Source of text:
RS:HS 16.435 (C: 20.207 inc)
Summary:

Agrees to purchase JS's 7-foot refractor if no other reasonable offer made, but doubts he would use it extensively. Plans to concentrate on observing nebulae with JH's reflector at Slough. Relays regards and question for P. S. Laplace.

Contributor:
John Herschel Project