Fragment of a letter discussing diffraction, JH's son's journey to observe eclipse and strong polarization of sun's corona, evidence of vast solar atmosphere.
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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.
Fragment of a letter discussing diffraction, JH's son's journey to observe eclipse and strong polarization of sun's corona, evidence of vast solar atmosphere.
Discusses negotiations between government and R.S.L. regarding Meteorological Departments of Board of Trade.
Thanks for sending [Charles] Graves's elegy on W. R. Hamilton, reflecting on Hamilton's great, 'high-souled,' 'enthusiastic' character.
PS's results on light and magnitude of stars agree with JH's results at the Cape. Comments on PS's research on light of planets.
Is working on a problem in polarized light, and finds his result disagreeing with F. J. D. Arago's third law; leads JH to think light cannot be undulatory in nature.
Expresses condolences on death of William Hamilton, mentioning his work and character.
Comments on GA's explanations about polarized light, and discusses GA's idea of the nature of light [see GA's 1865-10-18].
Realizes that GA is quite correct [see GA's 1865-10-30]; JH had neglected a basic principle about interference.
Has noted that Josef Stefan of the Vienna Academy of Sciences holds views on light and its polarization similar to GA's [see GA's 1865-10-30]. Agrees with GA's correction of an essay on Julius Caesar's landing in Britain.
Sends copy of paper on 'projection of the sphere in which the problem is to make any infinitely small figure on the projection similar to that on the sphere,' which he has presented to the Royal Geographical Society.
Acknowledges receiving a shipment.
Sends results of calculations of an equation for the relation of temperature and altitude.
Signing himself 'A.B.C.D.,' asks whether a priest is guilty of perjury for having refused to testify regarding a murder on the grounds that this would violate the seal of the confessional.
Results of calculations of an equation for the relation of temperature and altitude.
Saddened by the poor treatment of W. H. Smyth [see GA's 1865-10-18].
Approves of GA's development of a new type of eyepiece for use with the Royal Observatory's transit circle telescope.
On the physical structure of the sun's surface.
Questions EB's use of terms 'ponderable' and 'imponderable' matter in EB's almanac.
Thanks for his letter regarding the dioptric lights. Gives his own views as to their importance.
Thanks for his letter and comments. Is always pleased to have any omission pointed out. Comments on his theories of the changing of the climates.