Product photograph from Kontax Engineering.
Stirling Engine
A small engine that makes temperature differences visible
This low temperature Stirling engine turns a heat difference into flywheel motion using expanding and contracting air. Aluminum plates and a brass-rimmed flywheel make the mechanism visible as an object. It suits a physics teacher or mechanically curious adult who likes seeing an abstract energy principle happen on a tabletop.
Where to find it
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A thoughtful detail before you buy
The design operates from a temperature difference; the merchant gives warm coffee, sunlight and hand heat as examples. Results depend on suitable conditions.
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