The test with the non-magnet weight is in the third video below. You can also see in the comments to Murray-Smith's video that several other people have tried it and have come to the same conclusion I have.
http://www.youtube.com/watch?v=ehva-GfWdXA http://www.youtube.com/watch?v=EfuRyLxRPDI http://www.youtube.com/watch?v=tTY_wLKK_Ak
And if you look into how the electromagnetic Levitron works, you will also understand where the rotation of the white levitated sphere comes from in that longer video.
Designing and performing the right _control experiments_ is part of the fine art of doing Science. If one only does _demonstrations_ of an effect, one cannot determine actual cause-and-effect relationships between the variables and constants concerned. Control experiments are done to rule out alternative explanations for the phenomena and effects noted. They will keep one from making claims that just look silly or fraudulent, like "Perpetual Motion" from a couple of magnets dangling on a bit of thread.
Good work TK But I have done another test of which I will video with my phone as my camera has battery problems and the web cam is only 1.3Mp. The test is :- Use a cotton thread "least resistance to turning and you do not want tortion action" Cotton must be central between the two magnets "to stop any offset movement the best as possible" Suspend in the open where no metal or magnetic influences are present Let spin, note direction of spin "seems it is always CCW, why? are cotton threads always twisted CW? maybe" Leave to spin in both directions due to windup of cotton, until it has completely stopped. Once stopped, place your hand under the magnets and lift vertical so taking the tension off of the cotton, note what happens and try to explain if it was just the winding up of the cotton that was causing the spin in the "first" place! Remember the presumption is the twist in the cotton is causing the spin, now the cotton is twisted more and does not move!!!! "equilibrium!! to what? a magnetic field?" hum still questions to be answered I think! Repeat experiment with metal weight no magnetised. Video later in the day I hope regards Mike
« Last Edit: 2015-02-20, 09:57:26 by Centraflow »
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"All truth passes through three stages. First, it is ridiculed, second it is violently opposed, and third, it is accepted as self-evident." Arthur Schopenhauer, Philosopher, 1788-1860
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