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This is a miniature representation of the Aeolipile, described and probably invented by Hero of Alexandria in the 1st century AD (Wikipedia page). There are no contemporary pictures of the original, just a vague description; but it is usually shown as something like the bottom image on the left.
It is a reaction turbine, with no blades but three steam jets exhausting into the atmosphere. The roughly spherical boiler, 40mm diameter spins with the jets and is heated by a meths burner. It is supported by a needle bearing at the bottom and a miniature ball bearing at the top.| Make | Microcosm |
| Model | T1 |
| Made | 2018 |
| Description | Aeolipile turbine |
| Cylinders | 0 |
| Cylinder Type | |
| Bore mm | |
| Stroke mm | |
| Valve Type | |
| Boiler Type | Spherical |
| Boiler Diam mm | 40 |
| Boiler length/height mm | 40 |
| Fuel | Meths |
| Mechanical Condition | Good |
| Cosmetic Condition | Good |
| Paintwork | N/A |
| Packaging | |
| Purchased | 27/7/2018 |
| Purchase cost | £11.50 |
| Additional spend |