https://www.youtube.com/watch?v=vGlDsFAOWXc
This is a lovely video explaining what a Stirling engine is. The presenter does an excellent job of making the topic fun and interesting to watch! I think he must be a very good teacher. :-)
Engaging video! Loved the first comment (at least at the time of this viewing):
"Leave it to the British to invent an engine that could be powered by a cup of tea."
I had a girlfriend once who generated enough heat to run 3 or 4 Sterling engines.
Careful Buster, you may be giving some young guys, ideas! :-)