Thought experiment 4:
This strange electromotor
was initially invented by
Marinov. I had
independently reinvented
it some 9 years after
him just as thougt
experiment. But, he
actually made and tested
it. His final explanation
was that thermo-voltaic
motional contact protrusion
actually propels it.
Recent rechecking of this
experiment showed that it
rotates even with greasy
loose contacts clearly
refuting aforementioned
mechanical explanation.
Therefore its operation can
be based on some real
electromagnetic effect.
It is 3D: click it with mice to rotate and roll the middle button to zoom.