Carefully describes how to pack actinometers being shipped to India.
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The Sir John Herschel Collection
The preparation of the print Calendar of the Correspondence of Sir John Herschel (Michael J. Crowe ed., David R. Dyck and James J. Kevin assoc. eds, Cambridge, England: Cambridge Univ. Press, 1998, viii + 828 pp) which was funded by the National Science Foundation, took ten years. It was accomplished by a team of seventeen professors, visiting scholars, graduate students, advanced undergraduates, and staff working at the University of Notre Dame.
The first online version of Calendar was created in 2009 by Dr Marvin Bolt and Steven Lucy, working at the Webster Institute of the Adler Planetarium, and it is that data that has now been reformatted for incorporation into Ɛpsilon.
Further information about Herschel, his correspondence, and the editorial method is available online here: http://historydb.adlerplanetarium.org/herschel/?p=intro
No texts of Herschel’s letters are currently available through Ɛpsilon.
Carefully describes how to pack actinometers being shipped to India.
Forwarding copy of paper by Ernst F. W. Klinkerfues; EK purports to show that movement of a star toward or away from an observer will affect its refraction in an achromatic prism.
Comments against the paper of Ernst Klinkerfüss about observations of dispersed star light [see JH's 1866-2-24].
Agrees with GS's assessment of Ernst Klinkerfüss's paper [see GS's 1866-2-27].
Further comments on Ernst Klinkerfüss's paper, in response to JH's 1866-2-28.
Comments further on Ernst Klinkerfüss's work [see JH's 1866-2-28]; on the behavior of light emitted by an electric spark.
Comments on a letter GS received from Ernst Klinkerfüss, which leaves GS convinced of the basic correctness of the views of GS and JH.