Is still trying to bring the various definitions of the pound into agreement [see GA's 1867-11-30]; the question of weighing in air or vacuum remains as a problem.
Showing 21–26 of 26 items
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.
Is still trying to bring the various definitions of the pound into agreement [see GA's 1867-11-30]; the question of weighing in air or vacuum remains as a problem.
Having helped to create confusion surrounding the pound weight [see GA's 1867-12-3], JH now understands it simply and clearly; JH wonders if he is 'growing elderly.'
Comments on reports of meteor sightings from the United States and Italy; explains why one may see a satellite of Jupiter where there is none.
Is exceedingly grateful for the Synopsis of William Herschel's double-star observations. Comments on some of the readings. Has read his translation of Schiller's 'Spaziergang' with pleasure. Will be writing to Margaret Brodie Herschel.
Is trying to obtain parts of R.S.P.T. containing the original communication of William Herschel on changes in double stars. Would be glad of JH's assistance. Printer has made mistakes in spite of his proof corrections. Weather most unsuitable for observations due to fog. Is pleased JH is making a synopsis of all the double-star measurements.
Is pleased to hear his own sons are progressing well. Hopes Caroline (JH's daughter) will soon be able to come out. Is temporarily in charge of the Bombay army, which gives him plenty of work.