Search: Herschel, John in correspondent 
Tyndall, John in correspondent 
John Herschel in collection 
Sorted by:

Showing 120 of 58 items

From:
John Tyndall
To:
Sir John Herschel
Date:
[8 November 1851]
Source of text:
RS:HS 17.382 (C: RI 494)
Summary:

Sends memoirs on magnetism of crystalline bodies. Notes that remarks on atomic mechanism of Iceland spar contrast with JH's views expressed in JH's Light.

Contributor:
John Herschel Project
From:
John Tyndall
To:
Sir John Herschel
Date:
[8 November 1851]
Source of text:
RS:HS 17.381 (C: RI 493)
Summary:

Letter in application for Professorship of Experimental Philosophy and Chemistry at University College, Sydney.

Contributor:
John Herschel Project
From:
John Tyndall
To:
Sir John Herschel
Date:
[10 January 1852]
Source of text:
RS:HS 17.383a (C: RI 497)
Summary:

Asks JH to keep memoirs JT sent with regard to JT's application for position at University of Sydney.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
John Tyndall
Date:
[27 July 1856]
Source of text:
RS:HS 17.383b (C: 23.176; C: RI 499)
Summary:

Thanks for papers on diamagnetism and lecture on 'slaty cleavage.' Compares with phenomenon of 'ringing coins' in mint. Explains with examples conformity of JT's views with JH's own on geological stratification. Praises simplicity yet completeness of JT's work.

Contributor:
John Herschel Project
From:
John Tyndall
To:
Sir John Herschel
Date:
[30 July 1856]
Source of text:
RS:HS 17.384 (C: RI 501)
Summary:

Agrees with and asks permission to publish JH's letter in the Philosophical Magazine. Is going to Switzerland and Tyrol, where hopes to see phenomenon of glacial descent [see JH's 1856-7-31].

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
John Tyndall
Date:
[31 July 1856]
Source of text:
RS:HS 23.175 (C: RI 502)
Summary:

Clarifies letter on motion and structure modification of glaciers. JH thinks glacier ice unfavorable for exhibiting JT's phenomenon [see JT's 1856-7-30].

Contributor:
John Herschel Project
From:
John Tyndall
To:
Sir John Herschel
Date:
[2 March 1857]
Source of text:
RS:HS 17.385 (C: RI 503)
Summary:

Sends sketch of lecture on structure and motion of glaciers. Wants to conduct experiments on physical properties of ice, and applying polarized light. Beyond paper, is interested in cleavage of ice.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
John Tyndall
Date:
[17 March 1857]
Source of text:
RS:HS 17.386
Summary:

Thanks for lecture on glacier cleavage. Wonders how 'regelation' occurs when two masses of ice at 32° are placed in contact.

Contributor:
John Herschel Project
From:
John Tyndall
To:
Sir John Herschel
Date:
[20 March 1857]
Source of text:
RS:HS 17.387 (C: RI 504)
Summary:

Remarks on physical properties of ice and their bearing on glacial phenomena. Asks for help inventing term for idea of 'fracture and renewal' of glacial bendings.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
John Tyndall
Date:
[21 July 1861]
Source of text:
RS:HS 23.335 (ACCS: RS:HS 17.388a; C: RI 505-6)
Summary:

Thanks for and comments on paper and lectures on 'diathermancy &c' of gases, scientific teaching, and solar chemistry. Regrets that JT mentioned all names connected with light research except JH's. Remarks on absorption of light, molecular vibrations.

Contributor:
John Herschel Project
From:
John Tyndall
To:
Sir John Herschel
Date:
[24 July 1861]
Source of text:
RS:HS 17.388 (C: RI 507)
Summary:

Apologizes for not having seen JH's paper on spectra of colored flames and thus having overlooked JH's prior claims [see JH's 1861-7-21]. Will try to make amends.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
John Tyndall
Date:
[10 November 1861]
Source of text:
RS:HS 23.347 (C: RI 508)
Summary:

Reply to JT's 'Remarks on Radiation and Absorption.' Calls non-absorption of air and vapor key to understanding meteorological phenomena. Remarks on 'radiant heat' from moon.

Contributor:
John Herschel Project
From:
John Tyndall
To:
Sir John Herschel
Date:
[21 November 1861]
Source of text:
RS:HS 17.389 (C: RI 509-11)
Summary:

Gives account of observations on lunar radiation, including detailed description of experiments.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
John Tyndall
Date:
[22 November 1861]
Source of text:
RS:HS 23.348 (C: RI 512-13)
Summary:

Does not believe surface of moon can radiate cold; perhaps new moon can. Explains this geometrically.

Contributor:
John Herschel Project
From:
John Tyndall
To:
Sir John Herschel
Date:
[23 November 1861]
Source of text:
RS:HS 17.390a (C: 514)
Summary:

Clarifies that JT does not believe moon radiates cold itself, but effects are 'as if' it did. Relates this to atmosphere.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
John Tyndall
Date:
[24 November 1861]
Source of text:
RS:HS 23.350 (C: RI 515)
Summary:

Finds JT's work on thermotics 'highly interesting,' although criticizes measurements of 'tenuity' of vapor, and explanation of scattering of sunlight and formation of corona around moon during eclipse.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
John Tyndall
Date:
[12 April 1862]
Source of text:
RS:HS 17.390b (C: 23.367; C: RI 516-17)
Summary:

Remarks on JT's papers on radiant heat and related role of moisture. Will send requested sample of rock salt. Explains difficulties using it and hopes JT will have better success, perhaps even repeating JH's experiments.

Contributor:
John Herschel Project
From:
John Tyndall
To:
Sir John Herschel
Date:
[15 April 1862]
Source of text:
RS:HS 17.391 (C: RI 518)
Summary:

Finds JH's approval incredibly gratifying. Thanks for gift of rock salt. Is sending unscientific book; trusts JH's interests are broad enough to appreciate it.

Contributor:
John Herschel Project
From:
John Tyndall
To:
Sir John Herschel
Date:
[4 January 1863]
Source of text:
RS:HS 17.392a (C: RI 520)
Summary:

Asks permission to print extract of JH's letter on heat spots of spectrum of rock salt sample. Hopes JH's son [Alexander] will speak at Royal Institution; JT would help with illustration. Wonders how blue color of water relates to sky color and polarization.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
John Tyndall
Date:
[5 January 1863]
Source of text:
RS:HS 17.392b (C: 24.4; C: RI 521)
Summary:

Likes JT's explanation of sky's blue color. Has difficulty with JT's explanation of polarization of skylight. Comments on absorptive powers of vapor and liquid.

Contributor:
John Herschel Project