Whilst visiting friends in Bainbridge, North Yorkshire today I
The Archimedes‘ Screw is a device used to raise water.
Ah ha! A working Archimedes screw model. I've mounted the
Steve Seidl from frankenpaper.com sent me these pictures of a double
My first draft at an Archimedes screw in the previous post
This morning I had an Google chat message (I'm usually