Stirling Engine (IMAGE)

Max-Planck-Gesellschaft

Stirling Engine

Caption

A Stirling engine in the microworld: In a normal-sized engine, a gas expands and contracts at different temperature and thus moves a piston in a cylinder. Physicists in Stuttgart have created this work cycle with a tiny plastic bead that they trapped in the focus of a laser field.

Credit

Fritz Höffeler / Art For Science

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