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Author Topic: Strange spinning toys  (Read 4017 times)

Offline FreeEnergy

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Strange spinning toys
« on: August 22, 2007, 12:36:07 PM »
 The bizarre behavior of some spinning toys may be able to explain why the Earth's magnetic field reverses.
http://www.youtube.com/watch?v=AcQMoZr_x7Q

Free Energy | searching for free energy and discussing free energy

Strange spinning toys
« on: August 22, 2007, 12:36:07 PM »

Offline fletcher

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Re: Strange spinning toys
« Reply #1 on: August 23, 2007, 01:26:29 AM »
Did someone catch the explanation for why the rattleback reversed ? Interesting & articulate presentation by the proffessor.

Looks to me like there should not be any diffence in torque [if considered in isolation] when the turtles were opposed at right angles to the lever/boat ?

Unless the direction the turtles face, in relation to the spin direction, causes asymmetric drag [like a helicopter advancing & retreating blade] when combined with the down-lift generated by the boats hull. This could cause the rocking motion, if there were any sort of relative air flow ?

That is, changing kinetic energy of induced torque [horizontal rotational KE] put into the system into a vertical component of KE i.e. rocking instability, by the aerodynamic forces ? The toy then takes the path of least resistance as it tries to stabilize its angular velocity [wobble] & reverses direction ? Just thoughts  :)

Edit : Nahh - not likely there was any breeze around it so it must be a theory related to the detabilization & reversing of the magnetic poles ?
« Last Edit: August 23, 2007, 01:49:49 AM by fletcher »

Offline FreeEnergy

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Re: Strange spinning toys
« Reply #2 on: August 27, 2007, 09:54:59 PM »
i don't think too many people have seen this effect.

Free Energy | searching for free energy and discussing free energy

Re: Strange spinning toys
« Reply #2 on: August 27, 2007, 09:54:59 PM »
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Offline Prophmaji

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Re: Strange spinning toys
« Reply #3 on: September 14, 2007, 06:16:10 AM »
vortex energy.

 

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