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Tyndall, John in addressee 
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Herschel3359

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

Tyndall1981

From:
John Frederick William Herschel
To:
John Tyndall
Date:
Mar 15/63
Source of text:
MS JT/1/H/100; MS JT/1/TYP/2/533; HS/24/14, RI; RS
Summary:

No summary available.

Contributor:
Tyndall Project

Herschel3562

From:
Sir John Herschel
To:
John Tyndall
Date:
[15 March 1863]
Source of text:
RS:HS 24.14 (C: RI 522)
Summary:

Thanks for lectures on heat motion theory and radiation through earth's atmosphere, and for brochure on 'conformation' of the Alps. Asks about upcoming lecture of JH's son [Alexander].

Contributor:
John Herschel Project

Tyndall2111

From:
John Herschel
To:
John Tyndall
Date:
June 18 1864
Source of text:
HS 393b; MS JT/1/H/101; MS JT/1/TYP/2/524-7, RS; RI
Summary:

No summary available.

Contributor:
Tyndall Project

Herschel3563

From:
Sir John Herschel
To:
John Tyndall
Date:
[18 July 1864]
Source of text:
RS:HS 17.393b (C: 24.48; C: RI 524-7)
Summary:

Thanks for and comments on papers on scientific history and molecular physics, particularly on a magnetic experiment and on dynamical efficiency of coal relative to motion theory of light and heat. Comments on nature of heat, 'vis viva.' Deplores laxity with which physicists use and confuse terms 'force,' 'motion,' and 'energy.'

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

Herschel3139

From:
Sir John Herschel
To:
John Tyndall
Date:
[13 November 1864]
Source of text:
RI 305 (C: 529-30); draft 4pp RS:HS 17.394b (C: 24.66)
Summary:

Thanks for and comments on paper on luminous and obscure radiation, particularly on extra spectral rays, incandescence of platinum, and experiment using transcalescence of iodine.

Contributor:
John Herschel 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

Herschel3542

From:
Sir John Herschel
To:
John Tyndall
Date:
[16 November 1864]
Source of text:
RS:HS 17.396 (C: RI 532 & RS:HS 24.68))
Summary:

Surprised that JT cannot obtain heat spots [see JT's 1864-11-14]. Describes glasses and lenses used.

Contributor:
John Herschel 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

Herschel3345

From:
Sir John Herschel
To:
John Tyndall
Date:
[21 November 1864]
Source of text:
RS:HS 17.398b (C: 24.69; C: RI 535)
Summary:

Wishes luck but expresses inability to help with new science journal [see JT's 1864-11-18].

Contributor:
John Herschel Project

Herschel3361

From:
Sir John Herschel
To:
John Tyndall
Date:
[3 March 1866]
Source of text:
RS:HS 17.399b (C: 24.144)
Summary:

Describes experiment involving viewing spectrum of a light flash as it advances and recedes. [Marked 'not sent on further consideration.']

Contributor:
John Herschel Project

Herschel3524

From:
Sir John Herschel
To:
John Tyndall
Date:
[28 May 1866]
Source of text:
RS:HS 24.157 (C: RI 540)
Summary:

Thanks for note [see JT's 1866-5-26] on improvement of the lecturing style of JH's son [Alexander]. JH's son has studied lecture's subject deeply and loves science; JH hopes will be physics professor at a 'considerable institution.'

Contributor:
John Herschel Project

Herschel3412

From:
Sir John Herschel
To:
John Tyndall
Date:
[3 November 1867]
Source of text:
RS:HS 24.210
Summary:

Believes Michael Faraday's boro-silicate of lead has not been used for telescopes, but JH and others have tried using it for other optical purposes. Describes method for producing veinless flint glass.

Contributor:
John Herschel Project

Herschel3526

From:
Sir John Herschel
To:
John Tyndall
Date:
[26 November 1868]
Source of text:
RS:HS 24.241 (C: RI 547-8)
Summary:

Thanks for paper on action of solar and electric light on vapors, which should give JT further insight into blue color of sky and polarization of skylight. Comments on the latter. JH's son [Alexander] is working hard at Glasgow.

Contributor:
John Herschel Project

Herschel3535

From:
Sir John Herschel
To:
John Tyndall
Date:
[2 December 1868]
Source of text:
RS:HS 17.405b (C: 24.242; C: RI 553-4)
Summary:

Thinks JT's work on polarization will lead to remarkable discovery. Discusses production of rainbow, parallels to Isaac Newton's explanation of black spot on a soap bubble, and problems in JT's undulatory theory explanation of reflection. In JT's experiments, what are nebulous particles produced by light in gas or vapor?

Contributor:
John Herschel Project

Herschel8359

From:
Sir John Herschel
To:
John Tyndall
Date:
[13 December 1868]
Source of text:
RS:HS 19.160b
Summary:

JT's paper on polarization of sky light suggests that neutral points are functions of cloud density. This verifies JH's earlier explanation of blue sky color. Incomplete polarization. Cause of blue color in water. Corrects note on W. A. Miller's observations of rainbows.

Contributor:
John Herschel Project

Herschel3537

From:
Sir John Herschel
To:
John Tyndall
Date:
[14 December 1868]
Source of text:
RS:HS 24.243 (C: RI 557-8)
Summary:

Thanks for paper verifying JH's prediction that explanation of blue sky color carries with it that of polarization of skylight. Involves ultimate link between chemical and analytical dynamics. Notes that 'neutral points' in sky polarization have yet to be explained; offers tentative explanation based on clues in JT's work.

Contributor:
John Herschel Project

Herschel3538

From:
Sir John Herschel
To:
John Tyndall
Date:
[28 May 1869]
Source of text:
RS:HS 17.406a (C: RI 559-60 & RS:HS 24:260)
Summary:

Thanks for paper on comets. Offers questions, problems to be resolved, particularly on termination of comet.

Contributor:
John Herschel Project

Herschel3441

From:
Sir John Herschel
To:
John Tyndall
Date:
[30 May 1869]
Source of text:
RS:HS 17.407a (C: 24.264; C: RI 563-4)
Summary:

Suggests experiments with regard to polarization and vaporization, and comets' tails.

Contributor:
John Herschel Project
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