(December 17, 2016 at 6:53 am)zebo-the-fat Wrote: How about a low temperature Stirling engine http://www.stirlingengine.co.uk/LowTempe...ngEngines/
or a drinking bird https://www.amazon.co.uk/d/Toys-Games/Co...B004USLXD6
I used to spend a LOT of effort on drinking birds...
Boru
‘But it does me no injury for my neighbour to say there are twenty gods or no gods. It neither picks my pocket nor breaks my leg.’ - Thomas Jefferson