Hi,
I don't see the problem. You have to factor in the magnetic field, even if it is self-generated in some kind of positive feedback dynamic with the internal rotation. The article mentions magnetohydrodynamics (MHD) in rotating spherical systems but does not explain that fully - which maybe it should. The convection currents are electrically conductive. Any slight initial spin in one direction will feedback and re-enforce. But the entire arrangement is unstable - thus the poles can flip periodically. That pole flipping, without much secondary effect - is to me the biggest "counter-intuitive" physical effect. http://science.nasa.gov/science-news/science-at-nasa/2001/ast15feb_1/ I do not see the problem otherwise. The water or oil-filled heater has a fluid which is not electrically conductive. Jones From: David Jonsson Hi I was glancing at the title "SOLAR CONVECTION AND INTERNAL ROTATION": http://www.hao.ucar.edu/research/siv/siv_convection.php Convection cannot drive rotation. Convection is caused by temperature gradients and gradients cannot cause rotation. Am I wrong? The same argument was once used to disprove rotational electromagnetic engines which apparently do exist. And when I think about it the water in water filled heaters does circulate. It could of course be the same apparently but physically not rotational movement as in a vortex. David David Jonsson, Sweden, phone callto:+46703000370
