Showing 41–60 of 155 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 glad he likes the idea of projecting more than a hemisphere. Compares his own projection and a stereoscopic projection and comments on the results. Is now having another projection made that should give an accurate map of America.
Thanks ES for his paper. Sun spot activity should increase in 1857. Discusses his own earlier ideas concerning relationship between sun spots and Aurora Borealis.
Thanks for his letter and projection. Compares it with one of his own devising and encloses a chart of the isothermal lines of the Northern hemisphere. Has used a different system for his Cape Results.
Urges that observations be made of sunspots. Notes that sunspots are much more evident now than in 1856. [Written by JH under the pseudonym 'Helioscopus']
Glad to know which of ES's papers JH has. Sends another along with maps from [Keith] Johnson's Physical Atlas. Discusses JH's ideas regarding relationship between solar spots and magnetic disturbances.
Mentions [P.] Plantamour's memoir on barometer and a criticism by Mr. Dilams[?]. Comprehending why variations of magnetic disturbances correspond in period with terrestrial year is difficult.
Is grateful for his valuable remarks on the various projections of the sphere. Thinks the projection devised by JH to be well suited for isothermal lines. Has constructed a chart of the polar regions for the same purpose. Will try JH's projection.
Discusses advantages of different magnetic charts. Grateful for [P.] Plantamour's observations. Satisfied with [J. R.] Wolf's period of 11.11 years for solar spots.
Questions from Lord Overstone [S. J. Loyd] about decimal coinage system.
Looking forward to a visit from WW. Glad to hear that WW is editing Richard Jones's unpublished works. Sad to hear that George Peacock is seriously ill. Comments negatively on a book by Herbert Spencer.
Reliability of barometer and thermometer measurements from balloons. Compares results of several European observers. Suggests new expedition to Teneriffe [Canary Islands].
Thanks JH for critiquing her paper during his illness. MS's On the Connexion of the Physical Sciences is to be published in translation at Cesna.
Has the blocks for the snow crystals. Can easily take some photographs if he desires them. Also has an article on crystals.
Is too ill to visit JH as he had intended.
Suggests ways of eliminating transmission of vibration to a piece of sensitive equipment.
FF having suggested some time ago the publication of a collection of JH's essay, JH now offers to send FF JH's Essays Q.E.R.
Will be delighted to receive a copy of his collected essays. These are very valuable and enhance his reputation.
Sending him engraved single copies, also photographic copies of the larger ones. Comments on his researches into snow crystals.
JH's letter of resignation was read at a full meeting of the [R.S.L.] club last evening and it was the unanimous wish of those present that JH should not resign.
Note clarifying items of account.