magnetic resonance pt1

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• published: 18 Jun 2013
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Thanks to Jon Depew we learn about the existence of magnetic resonance. His outstanding demo of the equilibrium grid shows that there is a way of coupling magnets: in resonance. His video does not give all details, or perhaps? Perhaps it is so simple that it is just like 'doing it'? I had to try it out. I like to do replications which are as simple as it gets. At least, what I think it to be that is ;-) My setup: 1) a computer ventilator, 12 Volt 100mA, but I am powering it using a lithium-ion battery of 3.7 volts (1.85 Ah), so it may run several hours since the ampere draw is not that high (will show that in a follow up video), and the rpm is way down low. 2) An aluminum bar, which (luckily for me) has an opening in it in which my magnets fit snugly. 3) the magnets used are square magnets of 10mm 4) the hanging magnets are as follow: 2 magnets NS NS with in between a (copper) wire which attaches to a nail. The nail is then pivoting on a small iron ball which is held up with a magnet (same magnets used everywhere) 5) The motor has 3 magnets on top NS NS NS held on it with some sticky stuff The video shows 4 hanging threads, the left one is magnetically coupled with the motor. The 2nd, 3rd and 4th are spinning in the same direction, and are in magnetic resonance What I have learned so far. Suppose we have a simple setup, 1 motor and 1 hanging magnet (pair): - magnetic coupling makes the hanging magnet run very strongly and in opposite direction of the motor - if the hanging magnet runs in resonance, it needs to be rotated by hand to approx the same speed as the motor The simple setup is extended, we add one more hanging magnet. We choose the right distance, and by trial and error we continue until the distance allows a magnetic resonance. Again, rotate the magnet manually until it is up to speed. You need to wait to see if the rotation continues or not. If there is a wobble left and right, and you feel it is being drawn to the left (previous magnet) then move it a little closer (1 or 2 mm at a time). This way I had rotating the first magnet just coupled with the motor, and the second was magnetically coupled with the first one. So actually only magnet 3 and 4 were in magnetic resonance (I had to review my own video to check this). Watching the video frame by frame (download it, or just pause and press left arrow in YT) shows the 2,3 and 4th magnets run very nice in sync. The idea is to replicate this demo again and again and gather more information. * check the power usage of the motor with no magnets attached * same, but one magnet attached * same, etc etc etc go as far as we can get (suspending the magnets is a bit of a challenge for me). * if I have a lot magnets in resonance, I will remove the motor to see what will happen By all means, do look at Don Depew his equilibrius grid (nice he found a not existing word, easy to search for). On his website coralcastecode dot com you will find more information, how ever the info is chaotic! Also note that Jon makes some music, which he shares on the internet. In my video you can hear his sound on the background (no copyrights, all free music). I like his music, it is a lot like jamming and free playing. A lot of (electric) guitar play, and sounds a bit easterly (said by me, a European).