| Year | 2018 |
| Date | 30-Mar |
| Volume | 220 |
| Issue | 4,583 |
| Page | 503 |
| Category | Historic |
| Part | |
| Title | Tales of the SM&EE Collection: Perpetuum Mobile? A perpetual motion machine |
| Author | Roger Backhouse |
| Notes | Ponders one of the more unusual items in the SM&EE collection. What is perpetual motion? Thermodynamics, historical attempts to produce perpetual motion, clockmakers, patent offices, 'over unity' devices, a mystery? Thanks to: further reading |