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quote:For the viscosity to increase you can't do it by compressing the fluid. Good luck compressing a liquid. The only way I know of changing the viscosity of any liquid (other than adding/removing a solvent) is to increase or decrease the temperature.
quote:A stationary magnetic field induces an increase in the ferrofluid viscosity. An additional resistance to the flow occurs due to the field oriented magnetic particles impeded by free rotation in a vortex flow.
quote:precourser thanks for updating my design!i am not to artistic lol
quote:OK But its not just a liquid its a ferrofluid full of (10 nm) particles coated with a dispersant molecular layer.Normally they are randomly placed but they join up into chains when presented with a magnetic field thickening up the ferrofluid making it harder to flow or for something to move through it.
quote:Originally posted by PrecursorJust to further discuss the ferro fluid design. Perhaps you don't need the ball(s) at all. Have the magnet at the buttom to produce the verticle surface at the bottom and have gravity forming the horizontal surface at the top and over fill it. The fluid will spill over the edge and take the plase of the ball following the path down untill it reaches the bottom where, under the influence of the magnet, will join back up with the main body. This would create a constant flow, a current in the main body that can be tapped.
quote:The biggest problem I see with this is the assumption that the only force the magnets will have is in the horizontal plane. Why would the magnets not also pull the fluid down towards it?If the magnet is powerful enough to stop the fluid from flowing horizontally out of the column, despite the pressure of the fluid from above in the column, then would it not also be powerful enough to stop the fluid from climbing up the column in the first place?
quote:Perpetual motion machines do not work!
quote:The ball floating up and being deflected and the ball dropping down and penetrating far enough into the fluid to sart to float up the pipe my guesss is that where it fails is if it makes one of these trigger points successfully it wil not manage to make the other ie the ball is too heavy to pop out of the fluid or too light for its inertia to allow it to penetrate the fluid.
quote:God says so!