From:
Sir John Herschel
To:
George Biddell Airy
Date:
[12 September 1867]
Source of text:
RGO 6.695.491
Summary:
Comments on GA's theory of the thermo-electric origin of terrestrial magnetism.
Contributor:
John Herschel Project
Showing 1–4 of 4 items
Comments on GA's theory of the thermo-electric origin of terrestrial magnetism.
Is very pleased with resolution about the observations of Charles Rümker [see Edward Sabine's 1867-8-30].
It appears that the Indian government has now approved the introduction of the metric system; JH is very upset.
Has been observing sunspots and talks about sunspot cycles; JH is glad to see that son John has been practicing observing with the spectroscope in preparation for the Indian solar eclipse [see JH's 1867-6-12].