Wants information on dispersion/separation of light in plate or crown glass.
Showing 21–40 of 41 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.
Wants information on dispersion/separation of light in plate or crown glass.
Asking him to read GA's medal-speech.
Is enclosing two transcripts of letters from William Simms relating to the object-glass. a. Hopes to give account next week. b. One glass good, other has failed.
Regarding the acceleration of retention of a shrinking sphere.
Passes on information received from Thomas Maclear regarding stars. Has tried to use William Simm's object-glass.
Giving the plan of the Observatory.
Encloses transcript of letter dealing with object-glasses. Has given notice that he has withdrawn from the Physical Committee of the R.S.L.
Hopes JH will be staying with him. Would like statement from JH regarding the Magnetic Observatory.
Giving notice of a meeting of the Standards Commission.
Asking him to arrange distribution of the R.A.S. catalogues as he is too busy. When is JH going to try William Simm's object planes?
Requesting JH to jog Sir Robert [Peel's?] memory.
Thanking JH for his letter on double star orbits. Observations on angles of position of Gamma Virginis.
Is sending letters by W. R. Dawes and F. W. Bessel, the latter occasioned by a volume of 'Planetary reductions' presented to him by GA.
Mrs. Airy has given birth to a son.
Introducing B. A. Gould, who wishes to study observatories and astronomy in Europe. GA doubts whether he will be able to attend the meeting of the R.A.S.
Passing on information received from a O. M. Mitchel[l] of Cincinnati regarding Antares, and the surface of the sun.
A note enclosing a copy of a letter from the Admiralty, on which JH is requested to comment.
Regarding estimates and payment for a parallectical mounting.
Regarding the condition for determining the best possible orbit for a double star.
Encloses a copy of JH's 'letter of conditions.' Has been extremely busy.