| Year | 2004 |
| Date | 06-Feb |
| Volume | 192 |
| Issue | 4,214 |
| Page | 132 |
| Category | Nautical |
| Part | |
| Title | The Secret Workings of a Transparent Pop-Pop Engine |
| Author | Jeff Bindon |
| Notes | Some intriguing aspects. Experiments with transparent engines, summary of pop-pop engine operation, 'air bounce' & column momentum, evaporation and condensation, pop-pop engines and the second law of thermodynamics, making a transparent engine, references |