Lenz's Law - Caduceus Coil - Bedini - Perpetual Motion Holder - Leedskalnin Montage

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Uploaded by on Jan 8, 2010

Here is the best explanation for the magnet's rate of fall change that I received from "chipjarred" --- As the magnet falls under the influence of gravity, its magnetic field falls with it. If you pick some point along the interior of the copper tube, the field at that point increases as the magnet approaches until it passes, and then deceases as it falls away. So any given point in the tube experiences a time-varying magnetic field. Enter Faraday's Law. It says that a convective electric field is formed in proportion but oppositely to a time-varying magnetic field. The equation is "curl E = - dB/dt" where E is the electric field and dB/dt is the rate of change (time derivative) of the magnetic flux field, B. The direction of this induced E field is circumferentially around the interior of your copper tube.

The next link in the chain of events is provided by Ohm's Law, which is well known in its circuit form, V=IR (ie. voltage=current x resistance), but in texts it isn't usually included in Maxwell's equations, even though, Maxwell himself did include it. The field version of Ohm's Law says that when there is an electric field in a conductive medium (such as your copper tube) it causes a current density field that is proportional to the electric field times the conductivity of the medium (ie. "J = sE", where J is the current density field, s is the conductivity, and E is the electric field). "Conductivity" is just the inverse of "resistivity" which is the generalized version of "resistance" that is familiar to anyone who tinkers with circuits. The current flows in the direction of the E field, ie, around the interior of the copper tube.

So now we have a current flowing around inside your pipe, and Ampere's Law kicks in. It states that a convective magnetic field (as if there were any other kind) is formed in proportion to the current density plus a time varying electric field. The equation is "curl H = J + dD/dt" Where H is the magnetic strength field and D is the electric displacement field, aka electric flux field. Don't let the change from B to H and E to D confuse you. In "isotropic" media, such as your copper tube, H is related to B and D is related to E by constants for that material. Anyway, in this context, you can ignore the dD/dt term, since it is involved in electromagnetic wave propagation, which is not relevant to your experiment.

Note that the induced magnetic field is proportional to the current, and that current is the result of an induced electric field that is the OPPOSITE to the rate of change in the magnetic field from the falling magnet. This means that the induced magnetic field opposes the source magnet's field which is changing with time in the direction of the magnet's motion. The result is that the induced field results in a force opposite to the line of motion, slowing the magnet's descent. It can't completely stop the motion though, because the strength of the opposing field is linked to the magnet's velocity. If the magnet were to stop, the induced field would disappear, and the magnet would resume falling again.

If you were to cut your copper tube lengthwise down one side, opening up the closed conduction path around the circumference, the magnet should fall at very nearly the same rate as it does outside the tube. There would still be some induced current, but with no closed path, charges will accumulate near the gap since they cannot flow across it. You'd also get some lengthwise currents, since charge collection on the approaching side of the magnet will be opposite to those on the retreating side. Such lengthwise currents would cause some magnetic field, but they would do so at a right angle to magnet's motion. What's more, they'd largely be canceled out by an opposite current on the other side of the gap where the same procress is happening in reverse.

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Uploader Comments (MrAnguswangus)

  • This is technically not a Caduceus Coil.

    The wires on this coil look more like a barber shop pole.

    The Caduceus is a Helical Coil according to Phi.

    Please see my paper called "Fist Fights With Physicists - The Caduceus Coil" on Scribd,com

    You can have as many helixes (wires) as you like as long as they remain equidistant down the Cone, not cylinder.

    Have your wires running straight from top of the cone to the base and then twist the top 288 degrees to create that spiral around the cone.

  • @TheRealVerbz

    I really appreciate your comment and will definately be checking out that link.

  • very interested in caduceus coil .... tried it but not only did not havewinding right but did not hook it up right.. battery kept getting hot .. can you explain how to hook it up and how to do winding..very interested

  • Apparently, it will only emit scalar waves if you feed it AC or Pulsed DC. The nodes (wire crossings) should be at 90 degrees...mine are a little less than. I haven't tried it yet. I've been trying to get a serious pulsed DC current coming out of my Bedini output to run through it. I have read that the energy received at a scalar wave receiver is 500%-1000% greater than what was sent from the transmitter. Also,scalar waves travel 1.5 times the speed of light.Bearden is good to read or listen to.

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All Comments (51)

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  • caused of eddy curents

  • Cool video MrAnguswangas. Going to go try this out. Thanks.

  • Little Ed! :) this was great angus, thanks! 

  • yes i know, stop sending me replays i was wrong.. Good Job!

  • lol "whatddaya think? what can ya tell me aboot the copper pipe man?"

  • @dpatulea no it's called Lenz law

  • A moving magnet close to a fixed conductor will induce voltage.

    So, your falling magnet will induce voltage in the copper pipe's walls.

    But because the pipe is closed, this voltage is short-circuited and produces current (called Eddy current). This current in turn, will produce a magnetic field that will OPPOSE the magnet's movement. That's why your magnet will fall slowly.

  • @dpatulea Rather no. I think that it is called theLenz law. Moving magnet creates a counter acting magnetic field in the tube. But I bet You allready knew this?

  • @dpatulea LMAO@air friction!

    You should read the video description.

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