A note agreeing with GA about prism interference [see GA's 1840-5-20].
Showing 21–32 of 32 items
A note agreeing with GA about prism interference [see GA's 1840-5-20].
A note, sent with the manuscript papers of Stephen Groombridge, to JH as President of the R.A.S.
Regarding Prof. Baden Powell's paper on dark bands. Is making catalogues of the moveables of the observatory.
Concerning prism refraction.
Regarding the printing of Thomas Maclear's Survey papers. Work on magnetical and meteorological observations.
Regarding equipment at Royal Observatory. Comparison of planets.
Further observations on David Brewster's experiments. On heliometers. Observations on suggestions for Standards.
On the possibility of obtaining a heliometer from Munich.
Responds to GA's circulated material for the Standards Commission; suggests time to digest the information.
Is sending comments on GA's proposals [see GA's 1840-10-13]; JH has been asked about obtaining a heliometer from Munich; seeks GA's opinion on the quality of the brass workmanship in Munich.
Provides detailed comments on GA's circulated material on standards [see JH's 1840-10-30]; tends toward maintaining basic units but finding decimal relationships between them.
Copies of report are available if JH's friends on Board [of Visitors] want to see it. R.S.L. selected GA's polarity paper for Bakerian Lectures. Thanks for JH's influence.