A compass can show the polarized field of earth. I once 6 years ago began to see just how powerful the earths field can be. After some 7 years of playing with mags the way we do, I had never seen a magnet I was working with disrupt my work, due to the compass effect. Only 49sec, but second half is better. https://www.youtube.com/watch?v=6gOO7OHHeMMThe earths field strength seemed mostly nil when encountering it on a real compass, because they are damped down to keep the needle/indicator from moving too fast, that really seems to be a bad example of how strong it really is. I would imagine a 6in dia by 1in neo disk one might feel some nice torque in spinning that like in the vid. One would just have to set up another identical magnet on the table, on a thin plastic base so it will sit still up on edge, and say put it to the south of the test compassing magnet, and see how close the based magnet has to get to the compassing magnet in order to just cancel out the earths field on that magnet. So then the strength of that magnet is equal to the earths field at that distance measured from the face of the mag. So now, lets say we made a very light weight frame and ran many thin wires in parallel over the area under or even above the frame and all the thing wires were electrically in parallel say with long copper wire of a heavier gauge to solder to, then discharge a cap into the wires. If set so the wires were inline east and west, the device should have a tenancy to go up or down, against earths gravity. So the amount of wires and the amount of energy to move up and down should be able to be calculated if the flying frame shows any results. So I could imagine, if possible, say 8 of these on a larger frame, set up so the can spin on their circumference in order to keep the rows of conductors east and west at all times, that this could replace drones as we know them with props and blowers. Mags
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