Organizational matters regarding paper reports; comments on light from sun's corona [see JH's 1868-11-8].
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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.
Organizational matters regarding paper reports; comments on light from sun's corona [see JH's 1868-11-8].
Continues experiments with carbonic acid and electric light [see JT's 1868-11-30], hoping to 'explode' idea that atmosphere's polarization is due to reflection by air particles.
Thanks JH for sending plan for swinging cot to prevent seasickness [see ES's [1868]-11-28] and asks for more information.
Thanks JH for sending plan of swing to counteract seasickness. This will enable his long suffering friend Lady Sullivan to escape hay fever by going to sea but without thereby being beset by seasickness.
Further comments on solar light [see GS's 1868-12-1].
Thinks JT's work on polarization will lead to remarkable discovery. Discusses production of rainbow, parallels to Isaac Newton's explanation of black spot on a soap bubble, and problems in JT's undulatory theory explanation of reflection. In JT's experiments, what are nebulous particles produced by light in gas or vapor?
Disappointed that Benjamin Disraeli's secretary, Charles Fremantle, was appointed to vacancy left at Mint by death of William H. Barton. Thanks for JH's efforts on CS's behalf.
Continues experiments with carbonic acid and electric light [see JT's 1868-11-30], suggesting possible cause of blue cloud color and eventual whitening of light.
Asks JH where to find further information about a salt road and cliffs mentioned in JH's Physical Geography.
Discusses an experiment, described by JH in JH's Familiar Lectures, involving applying colors to paper. FP finds that his results differ from JH's.
To JH's knowledge, PS's Royal Mint position bore no absolute guarantee of permanence unless he had been paying a 'superannuation' fund.
Asks JH to look at a paper on musical scales; comments on a paper by A. Prazmosky on polarization of light from the solar corona.
Sends him a vocabulary of Aboriginal dialects and University calendar. The response to his questionnaire has been very disappointing.
Asks JH to sign [C. P. B.] Walker's certificate for the R.S.L.
Thanks JH for reply to letter questioning color experiment in JH's Familiar Lectures. Will conduct the experiment that JH suggests in the book.
Asks JH to review paper on blue color of sky, polarization of skylight, and polarization of light by cloudy matter.
Returns paper on musical scales; agrees with GS's comments on A. Prazmosky's paper [see GS's 1868-12-10].
JT's paper on polarization of sky light suggests that neutral points are functions of cloud density. This verifies JH's earlier explanation of blue sky color. Incomplete polarization. Cause of blue color in water. Corrects note on W. A. Miller's observations of rainbows.
Thanks for paper verifying JH's prediction that explanation of blue sky color carries with it that of polarization of skylight. Involves ultimate link between chemical and analytical dynamics. Notes that 'neutral points' in sky polarization have yet to be explained; offers tentative explanation based on clues in JT's work.
Has arranged for the last R.A.S.M.N. to be sent to him. Lieut. John Herschel has detected a fourth line in the spectrum of the Nebula in Orion.