| RefNo | AP/13/14 |
| Level | File |
| Title | Unpublished paper, regarding the action of iron on the magnetic needle by John Macdonald |
| Date | 12 January 1829 |
| Description | Macdonald recounts the polarised effect of guns and iron on the magnetic needle in the binnacle on a ship's deck. He provides guidance for navigation at sea with the effect of these iron objects in mind. Includes one set of illustrations in the text and three separate pages of illustrations.
Subject: Geodesy
Written by Macdonald in Summerlands, Exeter [Devon, England]. |
| Extent | 44p |
| Format | Manuscript |
| PhysicalDescription | Ink on paper |
| Digital images | View item on Science in the Making |
| AccessStatus | Open |
| RelatedRecord | AP/13/14/1 |
| AP/13/14/2 |
| AP/13/14/3 |
| AP/13/14/4 |
| AP/13/14/5 |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA3036 | Macdonald; John (1759 - 1831) | 1759 - 1831 |