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From:
Augustus De Morgan
To:
Sir John Herschel
Date:
[4 June 1856]
Source of text:
RS:HS 6.283
Summary:

Would he answer some of his queries when he has leisure? Queries on the law of beats for unison sounds. Met JH's daughter on Monday, who gave a fair account of JH and his recent work.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
George Biddell Airy
Date:
[4 June 1856]
Source of text:
RGO 6.216.117
Summary:

Some more information on the use of the actinometer [see JH's 1856-4-24 & GA's 1856-6-3]; some news of JH's wife, Margaret.

Contributor:
John Herschel Project