Asks JH to compile list of questions to be sent to 'commercial bodies' regarding prospective changes in standards of weights and measures. To be presented at June 1838 meeting of Commission of Standards [see JH's 1838-5-24].
Showing 21–40 of 626 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.
Asks JH to compile list of questions to be sent to 'commercial bodies' regarding prospective changes in standards of weights and measures. To be presented at June 1838 meeting of Commission of Standards [see JH's 1838-5-24].
Announces 7 July meeting of Standard Commission at R.A.S. apartments.
[Form Letter] GA's address, as Astronomer Royal, to Board of Visitors. Progress report on F. G. W. Struve's proposal for joint French-English-Belgian triangulation survey.
Agenda items for 2 Mar. 1853 meeting of Commission for Restoration of Standards of Lengths and Weights.
Agenda items for next meeting of 'Committee for Superintending the Construction of Standards.' Compares English, French, Danish, and Prussian standards.
Outlines suggestions from [Drinkwater-]Bethune for improving 'Report of Standards.' Bethune distinguished Exchequer, Local, and Parliamentary (or National) standards, and preserved unit called 'land chain' equal to twenty yards.
Given the Treasury stance [see Richard Owen's 1858-12-18], GA sees little point in setting up one station [see JH's 1858-12-18].
Comments on JH's observing a 'falling star.'
Would support the application for a grant [see JH's 1870-5-12], but would like to see some changes in the way calculations are made.
About some major variations in terrestrial magnetism readings.
Response to a letter from JH to G. G. Stokes [1867-5-5] seen by GA, on the problem of the effect of the telescope on illumination from a light source, especially related to a solar eclipse.
Detailed response to JH's 1846-10-22 about the matter of temperature corrections for magnetic observations.
Suspects that the original complainant about temperature corrections [see JH's 1846-10-22] was in fact working with a faulty magnetometer.
Asks for JH's help in trying to determine the likely cost of making magnetic observations at Greenwich.
Thanks JH for his help [see JH's 1840-8-14], and tells JH about a visit to Greenwich by Charles Wheatstone.
Comments on the state of William Whewell's health, and about the theories of E. F. W. Klinkerfüss [see JH's 1866-2-27].
Provides extensive comments, about GA's magnetic instruments and observations, in reply to Humphrey Lloyd's letter [see JH's 1842-1-17].
A notice of meeting of the Standards Commission.
The Standards Commission will need to meet soon; JH is asked to indicate most convenient, and most inconvenient, days. [See GA's 1838-6-9].
Trying to organize a meeting time for the Standards Commission that will suit everybody; GA wants to make very few changes in the standard relationships [see JH's 1838-11-18].