| RefNo | PP/18/12 |
| Previous numbers | PP/50/13 |
| Level | Item |
| Title | Paper, 'Note on the necessity of using well-annealed and homogeneous glass for the mirrors of telescopes' by Andrew Ainslie Common |
| Date | 1891 |
| Description | Common writes: 'In 1880 I ordered of the St. Gobain Glassworks, through their London agent, M. de Grand Ry, a disk of glass for the mirror of a 5-foot telescope. The limit of weight imposed by the manufacturers permitted a disk of about 61 inches diameter and 5 inches thickness ; this was made with a hole through the middle of 10 inches, in order to enable the telescope to be used as a Cassegrain telescope if required.'
Annotations in pencil and ink.
Subject: Optics / Scientific apparatus and instruments
Received 18 November 1891. Read 10 December 1891.
A version of this paper was published in volume 50 of the Proceedings of the Royal Society as 'Note on the necessity of using well-annealed and homogeneous glass for the mirrors of telescopes'. |
| Extent | 5p |
| Format | Manuscript |
| PhysicalDescription | Ink and graphite pencil on paper |
| Digital images | View item on Science in the Making |
| AccessStatus | Open |
| RelatedMaterial | DOI: 10.1098/rspl.1891.0033 |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA6681 | Common; Andrew Ainslie (1841 - 1903) | 1841 - 1903 |