From:
John Tyndall
To:
Sir John Herschel
Date:
27?] June [1869
Source of text:
RS:HS 17.414 (C: RI 566)
Summary:
Encloses reference to one of JH's letters to JT that has already been printed.
Contributor:
John Herschel Project
Showing 1–4 of 4 items
Encloses reference to one of JH's letters to JT that has already been printed.
Thanks for JH's suggestions on JT's outline of comet speculations. [G. B.] Airy, too, has replied. Includes more speculations on 'envelopes' and nucleus of comet.
Is delighted with JH's exposition of colors of thin plates and of measurements of a wave of light in Familiar Lectures. Asks permission to quote from it.
In response to JH's comments on JT's explanation of comets says faintness of head and nucleus does not indicate non-existence; eye may not see all. Experiments with polarized light produce 'gorgeous' 'residual blue.'