| RefNo | AP/51/4 |
| Level | Item |
| Title | Unpublished paper, 'Researches on solar physics no. II. Account of some recent observations on sunspots made at the Kew Observatory [London]' by Warren de la Rue, Balfour Stewart and Benjamin Loewy |
| Creator | Loewy; Benjamin |
| Date | 1868 |
| Description | The authors, after reviewing briefly the two theories on the nature of sunspots, which are still subjects of dispute, state the reasons which have led them to believe that sunspots are cavities and at a lower level than the Sun's photosphere. Their opinion has been recently strengthened by observations of a sunspot on 7 May 1868, which in disappearing produced in two successive photograms indentations in the west limb. After proving by the measurements made, which, with the calculations, are appended to their paper, that there can be no doubt about the identity of the heliographical elements of the previously observed spot and the successive indentations, they prove from the established details of the phenomena of sunspots that such indentations must under all circumstances be very rare occurrences, and state fully the conditions favourable to the recurrence of similar observations, inviting observers to give their particular attention to them.
Note on front reads 'Voted on after the vol. for 1868 was bound.' and 'Archives Feb/72'.
Subject: Astronomy
Received 2 June 1868. Read 18 June 1868.
Whilst the Royal Society declined to publish this paper in full, an abstract of the paper was published in volume 16 of the Proceedings of the Royal Society as 'Account of some recent observation on Sun-spots, made at the Kew Observatory'. |
| Extent | 13p |
| 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.1867.0098 |
| RelatedRecord | AP/50/2 |
| RR/7/27 |
| RR/7/28 |
| AP/55/4 |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA3837 | Rue; Warren de la (1815 - 1889); chemist and astronomer | 1815 - 1889 |
| NA6042 | Stewart; Balfour (1828 - 1887); physicist and meteorologist | 1828 - 1887 |