| RefNo | AP/12/10 |
| Level | File |
| Title | Unpublished paper and letter, 'Description of a machine for perpetuating motion' by Joseph Hopkins |
| Date | 17 November 1826 |
| Description | Hopkins describes his design for a perpetual motion machine consisting of a wheel with a groove for a ball bearing, balanced on pivots and supported by pillars. Includes figures of the machine in the text. Followed by a letter from Hopkins to the John Frederick William Herschel.
Subject: Physics
Received by the Royal Society on 20 November 1826. |
| Extent | 4p |
| Format | Manuscript |
| PhysicalDescription | Ink on paper |
| Digital images | View item on Science in the Making |
| AccessStatus | Open |
| RelatedRecord | AP/12/10/1 |
| AP/12/10/2 |
| AP/12/10/3 |
Fellows associated with this archive
| Code | PersonName | Dates |
| NA8238 | Herschel; Sir; John Frederick William (1792 - 1871); astronomer | 1792 - 1871 |