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Using perpetual motion to power a light bulb

This is some kind of crazy idea, and I am not sure it would work. If someone has good knowledge of mechanics and thermodynamics, please read and tell me what you think about that.

I love the idea of perpetual motion. You have to give an initial force, and then a movement is created that will never stops. Real perpetual motion is hard, but an almost perpetual motion would certainly be enough to power a light bulb. We can use for instance the principle of the Orffyreus Wheel :

How Orffyreus Wheel works :
There are 5 smalls balls inside the object. The moving of the balls inside the object provoke an unsteadiness that maintains the movement. During the lurching of the object, energy is partly lost. I propose to attach some other wheel to the object so we can use this energy lost to power something.

How would my object work :
1/ pushing the button to turn the light on is the initial force (so no other energy required at all)
2/ it sets the mechanism (described above) in motion : this motion will be maintained then and be used to create energy during several hour (not always as I think a perfect perpetual movement is too difficult to create)
3/ this energy is linked to your light buld, and that's it !

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Comment by A.V.Koshy on April 25, 2010 at 8:01am
very interesting idea
Comment by A.V.Koshy on April 25, 2010 at 8:01am
i dont know thermodynamics etc but im sure if babbage's theory would work this would too
Comment by A.V.Koshy on April 25, 2010 at 8:02am
Comment by Diego Castañeda Garza on April 26, 2010 at 9:03am
I had more less the same idea I call it a "gravity engine" the problem with this is beacuse of friction, you see friction takes part of the energy of the movement, some of the energy therefor is lost because of entropy, the energy that moves that wheel part goes to itself to keep the motion and the rest slowly goes away because of friction, untill it reach an equilibrium and it stops, HOWEVER if you can solve the friction problem you may be close to make it possible; I think that perhaps if it operates in a vacuum then friction can be avoided.

Still very good post +1 in creativity.
Comment by Edwige Lelievre on April 26, 2010 at 9:08am
Thanks Diego :) I am not very good in mechanics, so, one question : isn't there any way to use friction to turn it into energy ? (like creating static electricity ?)
Comment by Diego Castañeda Garza on April 26, 2010 at 6:47pm
yes I think you may be able to transform the friction in electricity, but you need to make sure you make more output energy that the one you use as an input.


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