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Discussion board help and admin topics => Half Baked Ideas => Topic started by: b0rg13 on October 05, 2010, 08:08:04 AM
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..some where i saw a vid where a magnet is dropped into a copper?(im not sure) tube and it took its time to fall, like it was falling through mud,...
.. what if.....a wheel of magnets was say hmmm, part of the wheel was semi encompassed in copper?... to upset the balance of the wheel?...
.. i tryed to be basic, i hope some one can understand what im trying to let out.
Peace. ;)
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ok no has commented.....fair enough...
...so ive drawn a basic pic...
this is ment to be a bike wheel with magnets placed every 2 or 3 cm i guess,,,around the out side of the wheel...
the left hand side is encompassed say %90 in a circle/tube of copper!......
.. NOW if any one has seen what happens when you drop a magnet down a copper tube it takes a while to make it out the other end, if the tube is long enough,..... it does not just drop through and onto the ground at free fall speed.
..so this would surly unbalance the wheel no ?.... the magnets in the copper tube would appear to be lightened while in the tube and the wheel should move clockwise.
..i wouldnt normally stick my neck out with something like this, BUT! (this is the weird part)..now and then i seem to have a weird dream about it,...and have done for years.
..any way i hope to see some comments on the idea , yeah i know the drawing sucks.
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You are describing the Lenz's Law experiment with the copper tube.
If I am understanding you correctly would it not just slow the rotation of the wheel ?
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yes more than likly it would slow the wheel....but.. at this point im just looking at getting it moving... or unbalancing it some how.
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There are so many vids of what you said,
but here is one for those arriving here
that are unfamilier with this annomoly.
http://www.youtube.com/watch?v=lQzkl5MD3i8
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yes it was a video just like that which kinda made me think..can it be used to upset the balance of a wheel and move it... it should self start.
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The moving magnet inside the conductive tube generates eddy currents in the tube. (move a magnet near a conductor, what do you get?) The eddy currents in the tube dissipate power as heat. This power comes from....the energy you put in by raising the magnet to the top of the tube.
It is a DRAG force and it operates always to oppose the motion of the moving magnet.
It has nothing at all to do with gravity or the weight of the magnet; raising and dropping the magnet is what makes the magnet move, but ANY motion of a magnet near a conductor will experience a drag from the eddy currents, no matter the direction of motion or the source of it.
There is no way to use this effect in a gravity motor for anything other than a brake.
And this is also (another reason) why many magnet motor designs such as Archer Quinn's cannot work: the magnets move near conductors like steel or aluminum plates or tubes and thus experience DRAG forces which oppose, not aid, their motion, regardless of the direction of motion.
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thanks TK thats what i needed to know(but did not).
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the problem is that it gets lighter on the way down and heavier on the way up which is the exact opposite of what you would need to make PMM
like a bucket in a well