That had a crooked vane
Solving its crooked behavior
Became a crooked pain
A fairly comprehensive discussion of the wrong and (probably) right answers for the rotation of a Crookes radiometer.
via Fine Structure
swans on tea
Just another SFN Blogs site
Take some microchannel plate preform, thin it, blacken one side by heating in a reducing atmosphere, etch the holes, make a gonzo radiometer. Grow some Anopor filter, blacken one side while still attached to the aluminum substrate with mordant dye, pop the porous alumina membrane, make a gonzo radiometer. Do the experiment. Bloody stop whining.