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Herschel, John in correspondent 
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Herschel4183

From:
Sir John Herschel
To:
William Thomson
Date:
[22 November 1864]
Source of text:
F. James, 'Between Two Scientific Generations: John Herchel's Rejection of the
Summary:

Thanks WT for pageproofs of his work on analytical dynamics. Compliments work on Isaac Newton's view of nature of luminous ether. Gives own views on ether and motion theory of heat.

Contributor:
John Herschel Project

Herschel4184

From:
Sir John Herschel
To:
William Thomson
Date:
[11 August 1868]
Source of text:
RS:HS 17.351a (C: RS:HS 24.224)
Summary:

Comments on WT's paper on geological time. Unsatisfied with the efficiency of tidal friction in retarding the rotation of the earth. Considers effect of external attraction on a rotating body to relate to momentum.

Contributor:
John Herschel Project

Herschel4606

From:
Sir John Herschel
To:
William Thomson
Date:
[25 August 1864]
Source of text:
RS:HS 17.349b (C: RS:HS 24.59)
Summary:

Thanks WT for paper on rigidity of the earth; agrees tidal action affects not only fluid motion of earth, but the solid as well. Mentions JH's paper of the previous year suggesting that tidal waves cause earthquakes. Raises questions about the idea of the earth as a magnet and about WT's dynamical theory of heat.

Contributor:
John Herschel Project
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