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From:
John Tyndall
To:
Annette Roche
Date:
18th July, 1864
Source of text:
MS JT/1/TYP/11/3850, RI
Summary:

No summary available.

Contributor:
Tyndall Project
From:
Sir John Herschel
To:
Augustus De Morgan
Date:
[18 July 1864]
Source of text:
RS:HS 24.53
Summary:

Comments on remedies suggested by AD [see AD's 1864-7-15]; on ciphers.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
Isaac Todhunter
Date:
[18 July 1864]
Source of text:
RS:HS 24.54
Summary:

Cannot find the source of supposed Wilhelm Struve probability calculation; believes he has made a mistake. Regrets the error was not noticed in time to correct the seventh edition of Outlines Astr.

Contributor:
John Herschel Project
From:
Sir John Herschel
To:
John Tyndall
Date:
[18 July 1864]
Source of text:
RS:HS 17.393b (C: 24.48; C: RI 524-7)
Summary:

Thanks for and comments on papers on scientific history and molecular physics, particularly on a magnetic experiment and on dynamical efficiency of coal relative to motion theory of light and heat. Comments on nature of heat, 'vis viva.' Deplores laxity with which physicists use and confuse terms 'force,' 'motion,' and 'energy.'

Contributor:
John Herschel Project
From:
Warren de La Rue
To:
Sir John Herschel
Date:
[18 July 1864]
Source of text:
RS:HS 6.157
Summary:

Encloses a letter from William Simms, which contains a suggestion for JH's reflecting prism. Inclines to the view that a reflector is not the most suitable instrument for sun observations.

Contributor:
John Herschel Project