Encloses newly-discovered proof that John Forbes Watson's wet bulb depression was not a clerical error.
Showing 21–31 of 31 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.
Encloses newly-discovered proof that John Forbes Watson's wet bulb depression was not a clerical error.
Plans date and time for first ascent of balloon experiment. WS's daughter has fallen in love with JH's son William.
Describes travels abroad and their educational value, news on balloon ascents, barometer corrections, Henri Regnault's hygrometer, invention of electric weaver and other new applications of electricity throughout Europe.
Interprets [John] Dalton's theory of the nonelasticity of gas particles, expressing its limitations, particularly in regard to a Mr. Paton's paper.
Before meeting of Balloon Committee, requests JH's opinion on value of renewing balloon ascents.
Urges renewal of high balloon ascents with periodic observations both to further knowledge of law of decrement of temperature and pressure and for 'ulterior investigations.'
Stresses importance for Balloon Committee of obtaining corresponding temperatures and pressures; describes two highly sensitive thermometers that might be built for this purpose.
Updates JH on activities of Balloon Committee, and thanks him for suggestion regarding temperature measurement. Mentions improving health of Mrs. Sykes.
Invites JH to meeting of Balloon Committee and updates everything in previous letter.
Asks for JH's opinion on balloon ascents, to be presented at next Balloon Committee meeting. Explains enclosed letters and diagrams regarding ascents; mentions that new thermometer suggested by JH is under construction.
Communicates Balloon Committee's feeling that balloon should not go as high as JH suggested, despite Henry Coxwell's having safely ascended higher. Reports successful presentation of previous results, hoping that Committee will find sufficient funding to continue.