Suggestions and diagrams for projecting sound great distances by means of small arms and parabolic reflectors.
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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.
Suggestions and diagrams for projecting sound great distances by means of small arms and parabolic reflectors.
Reimbursement from Navy for bills paid by JH to Georg Merz for 'Cape Equatorial.'
Please ask JH to send receipts to account for £316 spent on equatorial telescope from Munich.
The theoretical considerations that JH would take into account if he were going to study the subject of 'increasing and conveying to great distances and in given directions the reports of guns or other explosive instruments, as signals.'
A note probably accompanying JH's 1852-3-23. Comments concerning someone's collection.
William Lassell wishes to go to Malta to observe the heavens, and would like a letter of introduction to the governor there. Can FB assist with this?
Reports quite unsatisfactory results from gun firing sound experiments [see JH's 1852-3-23].
Urges that Thomas Maclear's son be appointed to assist Maclear in the observatory [at the Cape].
Will instruct Smith, Elder & Co. to provide a presentation copy of JH's Cape Results to Queen's College, Belfast. What has happened with JH's recommendation about Thomas Maclear's son [see JH's 1852-6-11]?
Report for the Lords of the Admiralty on the desirability of supplying Thomas Maclear with a transit circle.