> Hero of Alexandria made, or at least described, a simple steam turbine. But it was just seen as a toy It was in fact a toy [0]. It was basically a kettle mou

> Hero of Alexandria made, or at least described, a simple steam turbine. But it was just seen as a toy It was in fact a toy [0]. It was basically a kettle mounted on a spindle with two spouts on opposite sides. When heated the steam escaped via the spouts and the whole thing rotated around the spindle. For many reasons it could not have done useful work: * Very low pressure - with no valves to maintain a working pressure or pistons to drive a machine * Not engineered to withstand useful pressure (simple copper welds) * No way to reload water when in use [0] https://en.wikipedia.org/wiki/Aeolipile https://en.wikipedia.org/wiki/Aeolipile