Regarding equipment at Royal Observatory. Comparison of planets.
Showing 21–27 of 27 items
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.