From:
George Biddell Airy
To:
Sir John Herschel
Date:
[22 January 1824]
Source of text:
RS:HS 1.19
Summary:
Requesting information of the dispersion of rays in Crown and Flint glass.
Contributor:
John Herschel Project
Requesting information of the dispersion of rays in Crown and Flint glass.
Sends GA information about indices of refraction in different glasses and in different parts of the spectrum; also recommends the writings of Josef Fraunhofer.