Search: 1820-1829::1825 in date 
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Showing 1–20 of 183 items

Herschel5013

From:
André Marie Ampère
To:
Sir John Herschel
Date:
[25 October 1825]
Source of text:
RS:HS 1.394
Summary:

Thanking him for sending two volumes. Regarding recent experiments with electricity.

Contributor:
John Herschel Project

Herschel2015

From:
Baden Powell
To:
Sir John Herschel
Date:
[18 November 1825]
Source of text:
RS:HS 14.47
Summary:

Missed JH at the R.S.L. meeting. Has some experiments on which he seeks JH's opinion regarding presentation at the Society. Enclosing report.

Contributor:
John Herschel Project

Herschel11312

From:
Bernard A. von Lindenau
To:
Sir John Herschel
Date:
[8 July 1825]
Source of text:
RS:HS 11.217
Summary:

News that he has been elected an Associate of the Astronomical Society gives him pleasure. Does not have much time at the present to devote to astronomy. Hopes to visit England to obtain materials for a life of Edmund Halley.

Contributor:
John Herschel Project

Herschel9891

From:
C. Goring
To:
Sir John Herschel
Date:
1825-1
Source of text:
RS:HS 8.225
Summary:

Query regarding the diagrams in one of JH's articles in R.S.P.T. Has purchased one of the compound lenses on JH's recommendation, and relates some experiments with it. Would be pleased for JH to call at his house.

Contributor:
John Herschel Project

Herschel9892

From:
C. Goring
To:
Sir John Herschel
Date:
[18 January 1825]
Source of text:
RS:HS 8.226
Summary:

Is grateful for his letter and also for the brochure. Sees the folly of his own impatience. Regarding object glasses of telescopes.

Contributor:
John Herschel Project

Herschel3954

From:
Caroline Lucretia Herschel
To:
Sir John Herschel
Date:
[14 January 1825]
Source of text:
unknown
Summary:

Completing the catalogue of 2500 nebulae. Impressed with a French biography of William Herschel, although CH notes a few occasions where 'too great a stress is laid on the assistance of others.'

Contributor:
John Herschel Project

Herschel3953

From:
Caroline Lucretia Herschel
To:
Sir John Herschel
Date:
[7 March 1825]
Source of text:
unknown
Summary:

Wishes JH a happy birthday. Finished the catalogue of 2500 nebulae.

Contributor:
John Herschel Project

Herschel3816

From:
Caroline Lucretia Herschel
To:
Sir John Herschel
Date:
[27 March 1825]
Source of text:
unknown
Summary:

Explains the layout of her recently completed catalogue of 2500 nebulae.

Contributor:
John Herschel Project

Herschel3817

From:
Caroline Lucretia Herschel
To:
Sir John Herschel
Date:
[3 May 1825]
Source of text:
unknown
Summary:

The Duke of Cambridge inquired about JH's research interests.

Contributor:
John Herschel Project

Herschel4018

From:
Caroline Lucretia Herschel
To:
Sir John Herschel
Date:
[20 September 1825]
Source of text:
unknown
Summary:

Her social life is rather boring at the moment because CH is busy caring for her sick brother Dietrich.

Contributor:
John Herschel Project

Herschel5256

From:
Charles Babbage
To:
Sir John Herschel
Date:
[30 November 1825]
Source of text:
RS:HS 2.201
Summary:

Regarding [William?] French and G. B. Airy. Will breakfast with JH on Sunday. Going to Cambridge on Monday and would like his company.

Contributor:
John Herschel Project

Herschel10351

From:
Charles L. Harding
To:
Sir John Herschel
Date:
[7 August 1825]
Source of text:
RS:HS 9.234
Summary:

Thanks for the double star catalogue of JH and James South; comments on observing Encke's and Biela's comets.

Contributor:
John Herschel Project

Herschel7942

From:
Charles Wheatstone
To:
Sir John Herschel
Date:
[23 August 1825]
Source of text:
RS:HS 18.144
Summary:

Appreciates JH's interest in and encouragement of CW's experiments. Describes new experiments to elucidate theory of undulatory motion of sound and light. Invented 'kaleidophone' to display paths of vibrating rods. Hopes JH can confirm these results.

Contributor:
John Herschel Project

Herschel5787

From:
David Brewster
To:
Sir John Herschel
Date:
[2 December 1825]
Source of text:
RS:HS 4.259
Summary:

Regarding corrections requested by JH in a printed article. Ill health and overwork applies to him also. Pleased to hear of the work of the Optical Glass Committee. Comments on this.

Contributor:
John Herschel Project

Herschel2723

From:
Edward Sabine
To:
Sir John Herschel
Date:
[1825-4]
Source of text:
RS:HS 15.5
Summary:

Shares JH's doubts whether the Board of Longitude will fund the Teneriffe expedition, the importance of which he again stresses. Cannot personally cover the costs. Thanks JH for his support and praise.

Contributor:
John Herschel Project

Herschel2721

From:
Edward Sabine
To:
Sir John Herschel
Date:
[4 April 1825]
Source of text:
RS:HS 15.3
Summary:

Clarifies issues discussed in an earlier letter. Discusses whether the project of making meteorological observations will be feasible if the Board of Longitude does not offer financial support. Attempts to arrange a meeting with JH.

Contributor:
John Herschel Project

Herschel2725

From:
Edward Sabine
To:
Sir John Herschel
Date:
[11 April 1825]
Source of text:
RS:HS 15.7
Summary:

Encourages JH to bring ES's proposal for Teneriffe experiments before the R.S.L. Council.

Contributor:
John Herschel Project

Herschel2729

From:
Edward Sabine
To:
Sir John Herschel
Date:
[20 June 1825]
Source of text:
RS:HS 15.10
Summary:

Clarifies that the six artillery men are at ES's disposal but under JH's command. Agrees to oversee arrival of the rockets. If expenses are to be paid by the Department of Ordinance, a request must be made by the Secretary of the Board of Longitude. Agrees to keep a record of expenses, not including his time spent, which he considers 'public service.'

Contributor:
John Herschel Project

Herschel2730

From:
Edward Sabine
To:
Sir John Herschel
Date:
[12 July 1825]
Source of text:
RS:HS 15.11
Summary:

Reports on his meeting with Charles Bonne and their subsequent failure to see any signals the first night from either Mont Javoul or La Canche. Worries that the distances are too great for measurements so close to the sea. Speaks of similar measurements between Paris and Strasburg.

Contributor:
John Herschel Project

Herschel2731

From:
Edward Sabine
To:
Sir John Herschel
Date:
[16 July 1825]
Source of text:
RS:HS 15.12
Summary:

Reports his 'entire failure' with Charles Bonne to see signals from both La Canche and Mont Javoul on the same night. Tells of moving the telescopes to Tuniers on 1825-7-15. Speaks of similar experiments elsewhere, which also failed. Concludes that distance is not the only factor in distinguishing signals. Plans to visit JH on 1825-7-25.

Contributor:
John Herschel Project
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