Search: Herschel, John in correspondent 
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letter in document-type 
Airy, George Biddell in addressee 
1840-1849::1842::04 in date 
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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
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