Search: Herschel, John in author 
Herschel, John in correspondent 
1840-1849 in date 
Airy, George Biddell in correspondent 
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Herschel381

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[19 May 1840]
Source of text:
RGO 6.463.78
Summary:

Thanks GA for the time and trouble GA took in writing about interference bands [see GA's 1840-5-17]; JH's wife, Margaret, is making many visits to the dentist.

Contributor:
John Herschel Project

Herschel382

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[1840-5-20 or later]
Source of text:
RGO 6.463.81
Summary:

A note agreeing with GA about prism interference [see GA's 1840-5-20].

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

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

Herschel385

From:
Sir John Herschel
To:
George Biddell Airy
Date:
1845-4-4 or later
Source of text:
RGO 6.463.325
Summary:

Provides the best values available for dispersion and separation, which will allow GA to calculate what he needs [see GA's 1845-4-4].

Contributor:
John Herschel Project

Herschel386

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[4 December 1846]
Source of text:
RGO 6.9.79
Summary:

Asks a number of questions that need answers before considering the purchase of a large new telescope for the Royal Observatory.

Contributor:
John Herschel Project

Herschel388

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[10 January 1848]
Source of text:
RGO 6.9.151
Summary:

Thanks GA for his contributions to some material JH is compiling; asks about date of Board of Visitors meeting.

Contributor:
John Herschel Project

Herschel389

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[22 January 1848]
Source of text:
RGO 6.9.174
Summary:

Thinks the building changes proposed [see GA's 1848-1-21] are fine; explains JH's position on the whole matter.

Contributor:
John Herschel Project

Herschel39

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[22 October 1848]
Source of text:
RGO 6.370.67
Summary:

JH begs to differ with GA and Isaac Newton on the moon's motions [see GA's 1848-10-13]; warns GA against accepting J. H. Seyffert's work as accurate.

Contributor:
John Herschel Project

Herschel390

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[26 February 1848]
Source of text:
RGO 6.9.195
Summary:

Surprised by GA's unhappiness with George Merz [see GA's 1848-2-17]; suggests GA seek information from Thomas Maclear at the Cape, who is getting a new telescope from George Merz.

Contributor:
John Herschel Project

Herschel391

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[5 April 1848]
Source of text:
RGO 6.9.204
Summary:

Willing to let GA choose the best objective lens [see GA's 1848-4-5]; then JH offers another possibility; all are ill at Collingwood.

Contributor:
John Herschel Project

Herschel394

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[19 May 1847]
Source of text:
RGO 6.9.578
Summary:

Further to resolving the time conflict [see GA's 1847-5-15] and sending out invitations for Visitation Day.

Contributor:
John Herschel Project

Herschel395

From:
Sir John Herschel
To:
George Biddell Airy
Date:
1847-5-24 or earlier
Source of text:
RGO 6.9.594
Summary:

Gives GA an address for the next while, and tells GA what JH has done about invitations for Visitation Day [see JH's 1847-5-19].

Contributor:
John Herschel Project

Herschel396

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[28 October 1847]
Source of text:
RGO 6.230.187
Summary:

Clarifies the agenda for the next R.A.S. meeting, and reports that the large refracting telescope is on the way to the Cape.

Contributor:
John Herschel Project

Herschel398

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[2 February 1848]
Source of text:
RGO 6.230.444
Summary:

Is aware of T. J. Hussey's drawings [see GA's 1848-2-1]; needs information about P. A. Hansen's lunar theory for an appreciation JH is to provide.

Contributor:
John Herschel Project

Herschel399

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[24 September 1848]
Source of text:
RGO 6.230.454 (LCC: 6.675.578 inc)
Summary:

Personally would like to have F. W. A. Argelander's work printed [see GA's 1848-9-13], but will need to get a wider opinion; also asks about sharing money available from the Admiralty [see GA's 1845-10-24].

Contributor:
John Herschel Project

Herschel40

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[24 October 1848]
Source of text:
RGO 6.370.71
Summary:

Still arguing that Isaac Newton is not correct concerning the moon's motions [see GA's 1848-10-24].

Contributor:
John Herschel Project

Herschel402

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[9 December 1845]
Source of text:
RGO 6.193.234
Summary:

Is skeptical of the American observations [see GA's 1845-12-8], and reports other observations communicated to JH.

Contributor:
John Herschel Project

Herschel403

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[15 July 1846]
Source of text:
RGO 6.193.239
Summary:

About family health; JH's star counting has led him to believe that all stars are part of one sidereal system [the Milky Way].

Contributor:
John Herschel Project

Herschel405

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[23 May 1847]
Source of text:
RGO 6.193.243
Summary:

Will send measurements of the requested stars [see GA's 1847-5-15] as soon as JH can consult the appropriate papers.

Contributor:
John Herschel Project
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