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1860-1869::1863 in date 
Tyndall, John in addressee 
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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
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
Addressee
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