Sends the formula for finding the maximum diameter of the planets.
Showing 21–40 of 195 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.
Sends the formula for finding the maximum diameter of the planets.
Sending their account for J. J. Littrow's astronomical clock, now packed and shipped.
P. L. Guinand has informed the Astronomical Society that he can make flint glass free from the usual imperfections. Would like any information from JN. One of his papers has been named as likely to receive a prize. Hears that an arithmetical machine has recently been demonstrated before the Institute. Have any details been made public?
Of Cambridge University news, and observatory plans.
Observatory plans are progressing well; GP also sends some Cambridge University news.
About the election to fill vacancies at Cambridge University.
About intrigue and unethical dealings surrounding the election to fill vacancies at Cambridge University.
Thanks JH for the books sent, and describes the work at Geneva in making geodesic measurements.
Travels with James Grahame from Calais to Brussels. Visit with General Pierre Cambronne and tour of Waterloo. Leaving tomorrow for Antwerp. Mr. Gibson is useless as traveling companion.
Legacy of stock for JDH from William Herschel's will. How shall JH transfer it to Hanover?
Leaving for Calais tomorrow. Unable to see Mr. Beckwith. Hopes [Susan] White arrived safely in Slough. Encloses Astronomical Society's notice of F. W. Bessel's determination of declinations of fixed stars.
JH and James Grahame visited [Jan van den] Bosch's agricultural colony in Frederick's-Oort for 2,400 urban itinerants. Leave tonight for Haarlem, Hague, and Rotterdam.
William Herschel is getting weaker, but is not in pain. Lady Mary Herschel is anxious for JH's arrival.
JG is called home urgently. Does not want to go, but feels painful duty to do so. Cancels visit to Slough. Asks JH to retrieve prints that JG left at Downing St.
Hopes JH's presence is solace to JH's mother. Wants to visit Slough, but must return to Scotland before 10 Sept. Death of William Herschel and need to surrender to God's will. Prays for JH and JH's mother.
Condolences on death of William Herschel.
Condolences on death of William Herschel. JH should not feel guilty for being absent.
Extols friendship with William Herschel. Regrets that JP cannot attend funeral.
Condolences on death of William Herschel.
John and William Langton will handle legal matter of Mr. Davenport's overdue rent. Sends JH's stockings. Mrs. Goodall says wonderful things about JH. Mary Baldwin leaves Slough on Wednesday. MH cannot stay alone; will seek another companion.