Search: Herschel, John in correspondent 
1860-1869::1864::11 in date 
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Showing 21–36 of 36 items

Herschel4538

From:
Charles Pritchard
To:
Sir John Herschel
Date:
[9 November 1864]
Source of text:
RS:HS 14.92
Summary:

Compares W. L. Newman's and CP's calculations of optical coefficients to those in JH's work. Sends JH formulae and tables for calculating telescopic lens thickness and shape in relation to the dimensions of the telescope. Wishes JH luck on Iliad.

Contributor:
John Herschel Project

Herschel4546

From:
Charles Pritchard
To:
Sir John Herschel
Date:
[10 November 1864]
Source of text:
RS:HS 14.93
Summary:

Compares JH's equation for lens curvature with that of C. F. Gauss.

Contributor:
John Herschel Project

Herschel4894

From:
George Biddell Airy
To:
Sir John Herschel
Date:
[24 November 1864]
Source of text:
RS:HS 1.281 (C: RGO 6.381.439)
Summary:

Informing him that he has just heard of the death of Wilhelm Struve.

Contributor:
John Herschel Project

Herschel5739

From:
Edward William Brayley
To:
Sir John Herschel
Date:
[29 November 1864]
Source of text:
RS:HS 4.228
Summary:

Sends his article on the sun and the British Almanac for 1865. Regarding various current theories relating to the sun. The professorship he applied for has not materialized.

Contributor:
John Herschel Project

Herschel578

From:
Sir John Herschel
To:
George Biddell Airy
Date:
[25 November 1864]
Source of text:
RGO 6.359.540
Summary:

Compares earlier and more recent pound determinations and finds interesting results; wants GA's opinion on the accuracy of his work, as JH wishes to send it to the India committee.

Contributor:
John Herschel Project

Herschel5829

From:
Alfred Brothers
To:
Sir John Herschel
Date:
[2 November 1864]
Source of text:
RS:HS 4.298
Summary:

Is grateful for his letter regarding the claim for the discovery of the hyposulfite fixing process.

Contributor:
John Herschel Project

Herschel5830

From:
Alfred Brothers
To:
Sir John Herschel
Date:
[7 November 1864]
Source of text:
RS:HS 4.299
Summary:

Regarding the differences between portraits and photographs. Is sending him some magnesium for photographic purposes.

Contributor:
John Herschel Project

Herschel6854

From:
Warren de La Rue
To:
Sir John Herschel
Date:
[22 November 1864]
Source of text:
RS:HS 6.162
Summary:

Encloses a letter from Angelo Secchi. Sent him a Herschelian eye piece and is having a prism prepared for him. Secchi has seen James Nasmyth's 'willow leaves.'

Contributor:
John Herschel Project

Herschel7748

From:
G. Wharton Simpson
To:
Sir John Herschel
Date:
[7 November 1864]
Source of text:
RAS:JH Archive 13/3.110; Reel 10
Summary:

Photographic News received copies of papers from R.S.P.T. giving evidence of [JH's] use of hyposulfite of soda. Will refer to W. H. F. Talbot on use of bromine, as JH suggested. P. B. Goddard of Philadelphia claims to have used bromine in Daguerreotype process in 1839, but did not announce it publicly until 1843.

Contributor:
John Herschel Project

Herschel8626

From:
Sir John Herschel
To:
Roderick Impey Murchison
Date:
[19 November 1864]
Source of text:
Geological Society
Summary:

Asks RM whether RM thinks any of the geographical work of Karl Ritter should be translated into English.

Contributor:
John Herschel Project

Tyndall2176

From:
John Herschel
To:
John Tyndall
Date:
Nov. 13 1864
Source of text:
HS 394b; MS JT/1/TYP/2/529-30, RS; RI
Summary:

No summary available.

Contributor:
Tyndall Project

Tyndall2177

From:
John Tyndall
To:
John Herschel
Date:
14th Nov. 1864
Source of text:
HS 395; MS JT/1/TYP/2/531, RS; RI
Summary:

No summary available.

Contributor:
Tyndall Project

Tyndall2179

From:
John Herschel
To:
John Tyndall
Date:
Nov. 16/64
Source of text:
HS 396; MS JT/1/H/102; MS JT/1/TYP/2/532, RS; RI
Summary:

No summary available.

Contributor:
Tyndall Project

Tyndall2180

From:
John Tyndall
To:
John Herschel
Date:
17th Nov. 1864
Source of text:
HS 397, RS; RI
Summary:

No summary available.

Contributor:
Tyndall Project

Tyndall2184

From:
John Tyndall
To:
John Herschel
Date:
18th Nov. 1864
Source of text:
HS 398a, RS
Summary:

No summary available.

Contributor:
Tyndall Project

Tyndall2186

From:
John Herschel
To:
John Tyndall
Date:
Nov. 21. 1864
Source of text:
HS/398b, RS
Summary:

No summary available.

Contributor:
Tyndall Project
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