Search: Herschel, John in correspondent 
Airy, George Biddell in correspondent 
John Herschel Project in contributor 
letter in document-type 
1840-1849 in date 
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Showing 81–100 of 409 items

Herschel4714

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[21 March 1842]
Source of text:
RS:HS 1.103 (C: RGO 6.368.651)
Summary:

Hopes to meet JH on 29 March.

Contributor:
John Herschel Project

Herschel383

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[10 April 1842]
Source of text:
RGO 6.463.300
Summary:

Sends GA a spectrum photograph, and explains how JH obtained it.

Contributor:
John Herschel Project

Herschel4715

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[21 April 1842]
Source of text:
RS:HS 1.104 (C: RGO 6.463.302)
Summary:

Returns photographs of spectrum, with observations on the results.

Contributor:
John Herschel Project

Herschel384

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[24 April 1842]
Source of text:
RGO 6.463.303
Summary:

Sends GA two more spectrum photographs [see JH's 1842-4-10], and believes that these may lead the way to color photography.

Contributor:
John Herschel Project

Herschel4716

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[28 April 1842]
Source of text:
RS:HS 1.105 (C: RGO 6.368.652)
Summary:

Returning photographs, with observations. Regarding the transport of loads in hilly country. Remarks on the transcription and pronunciation of foreign languages.

Contributor:
John Herschel Project

Herschel1748

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[13 May 1842]
Source of text:
TxU:H/M-0628.2 (C: RGO 6.368.654)
Summary:

Sends JH the current position of Gamma Virginis.

Contributor:
John Herschel Project

Herschel342

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[31 May 1842]
Source of text:
RGO 6.8.544
Summary:

About the length of a Board of Visitors' meeting, and about arrangements afterward.

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

Herschel4717

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[24 August 1842]
Source of text:
RS:HS 1.106 (C: RGO 6.368.655)
Summary:

Returning packet of papers on magnetism. Encloses copy of a letter he has sent to Edward Sabine. Has seen the recent eclipse of the sun.

Contributor:
John Herschel Project

Herschel107

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[25 August 1842]
Source of text:
RGO 6.675.329
Summary:

A note to accompany some letters being returned to GA.

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

Herschel4718

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[31 August 1842]
Source of text:
RS:HS 1.108 (C: RGO 6.675.330)
Summary:

Encloses copy of a letter written to Edward Sabine. Wants instruments of quicker vibration.

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

Herschel4719

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[16 September 1842]
Source of text:
RS:HS 1.109 (C: RGO 6.427.68)
Summary:

Asking JH for his views on Charles Babbage's calculating machine, so that he can pass on the information to the Chancellor of the Exchequer.

Contributor:
John Herschel Project

Herschel467

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[20 September 1842]
Source of text:
RGO 6.427.69
Summary:

Needs some clarification of GA's letter [see GA's 1842-9-16] before JH is ready to reply about the calculating engine.

Contributor:
John Herschel Project

Herschel4720

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[21 September 1842]
Source of text:
RS:HS 1.110 & 22.135
Summary:

Reply to GA's letter on Charles Babbage's calculating machine.

Contributor:
John Herschel Project

Herschel4721

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[22 September 1842]
Source of text:
RS:HS 1.111 (C: RGO 6.340.342)
Summary:

Robinsons (Devonshire St.) have offered their standard Troy pound, together with its history for £20-0-0. [JH has added notes from his reply regarding the present whereabouts of the various Troy pounds.]

Contributor:
John Herschel Project

Herschel4722

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[22 September 1842]
Source of text:
RS:HS 1.112 (C: RGO 6.427.71)
Summary:

Further remarks on his letter concerning Charles Babbage's calculating machine (see GA's 1842-9-16) in order to clarify JH's mind.

Contributor:
John Herschel Project

Herschel537

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[23 September 1842]
Source of text:
RGO 6.340.343
Summary:

Gives GA some accounting of standard weights in Britain, and feels that it would be worth acquiring Robinson estate weight [see GA's 1842-9-22].

Contributor:
John Herschel Project

Herschel4723

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[26 September 1842]
Source of text:
RS:HS 1.113 (C: RGO 6.427.72)
Summary:

Encloses the Chancellor of the Exchequer's letter concerning Charles Babbage's calculating machine.

Contributor:
John Herschel Project
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