| RefNo | AP/16/20 |
| Previous numbers | AP.16.20 |
| Level | Item |
| Title | Unpublished letter, regarding perpetual motion from Georgius Kmettyi [György Kmety] to the Royal Society |
| Creator | Kmety; György |
| Date | 1833 |
| Description | Kmettyi shares information on the design of a perpetual motion machine which features a curved hammer and wheel.
Subject: Physics / Engineering |
| Language | Latin |
| Extent | 4p |
| Format | Manuscript |
| PhysicalDescription | Ink on paper |
| Digital images | View item on Science in the Making |
| AccessStatus | Open |
| RelatedRecord | AP/2/16 |