Neodymium magnet in copper pipe

New fat copper pipe with big magnet:

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Fun with fidget spinners and super strong magnets!
In this video I muck around with some cool fidget spinners and super strong (but small) neodymium magnets! I show off the fidget spinners, and their variety of colours. You can use the magnets to build your own custom big fidget spinner. Fidget Spinner: Premium Fidget Spinner: Magnets: Tungsten weight block: (Affiliate links) Watch this space, because soon i'll be releasing a video about how to measure the speed of a fidget spinner! Music: Contact me here: ============= My setup: (Affiliate links) Microphone: Camera: Video editing software: Monitor: Streaming software: ============= Want to chat on Facebook? Like my page:

Lenz's Law Demo using a Spinning Copper Tube and Ring Magnets
Another Lenz's law / Eddy currents demo: Levitation of grade N52 neodymium ring magnets (16 mm inner dia) on spinning 12 mm copper tube. Instructions on how to replicate this experiment: The copper tubing doesn't have to be that long in fact the shorter tube you use the easier it is to attach the drill and less weight also means higher rpms and less stress for the drill. The hardest part of this experiment for me was attaching the copper tube to the drill in a way that it is balanced right. It got easily off centered. I ended up using a micro precession screwdriver. The smaller end fit straight the drill and the handle end fit almost perfectly inside the copper tube. I actually used couple of balloons to center the screwdriver handle end inside the tube. This was a real McGyver solution. If you have proper tools it's worth spending a little extra time for this joint. I recommend non-ferrous materials - the screwdriver I used as a joint was attracted by magnets but it didn't seem to disturb the experiment too much. Magnets are brittle and even the high centripetal forces can break them so eye protection is a must!

sphere spins, but in wrong plane; around wrong axis
Magnetic sphere is N38, diameter 1" (26 mm). Coil is a basic vortex coil, 120 notches; stepping 41, aready energized with 180° phase-shifted square wave signals @ ca. 13 Hz at start of video. Powered by a 12 V car battery, with a 21 W car light bulb as load in each circuit. Signal generation by sqare wave generator, 50% duty cycle. I use a DDS20 digital square wave generator which I bought from 1&bereich=&marke= Signal B is produced by a NOR-gate, so that it should be exactly in phase opposition to signal A, that is to say while A is ON, B is OFF and vice versa. With my signal generator I can only change the frequency. No alteration of duty cycle, phase shifting or other fancy stuff. The sphere spins with good torque, i.e. there is a lot of friction between the sphere and the white stone slab, which lies under the coil. More on in forum thread "Marko Rodin"

World's First Electric Generator
Huge thanks to the Royal Institution, Professor Frank James, and Katie Atmore for filming. For the Sixty Symbols version of this experiment click Michael Faraday created the first electric generator in 1831 using a coil of wire and a permanent magnet. When the magnet was moved relative to the coil, current was induced in the coil. A similar experiment can be performed with a copper tube and a magnet. Although copper is not magnetic, it is a conductor. As the magnet falls through the pipe, the magnetic field changes over different sections of the pipe. This induces swirling currents (called eddy currents), which create a magetic field that opposes the motion of the magnet. This means work must be done to move the magnet through the pipe. This work generates the electrical energy, which is then dissipated as thermal energy in the pipe. The same basic principle is used to generate electricity throughout the world: moving a magnet inside copper coils. Experiments A Cappella Where Did The Earth Come From The Coastline Paradox Microwave Grape Plasma Music by Kevin McLeod ( Sneaky Snitch and Danse Macabre