Magnetic levitation Ferromagnetic diamagnatism

[dah4x]

because the magnet tower on each side is like this:

if the nut is S

the tower is

S

N

-

N

S

the N on the bottom has an attraction and it makes it move towards it

[ojamalio]

To many science like comments for me. Interesting video though.

[CaspaB]

If you had a vertical brass rod and a strong magnet nearby (near the middle of the rod, and off to the side) and a steel nut part way up the rod, it would move to be as close to the magnet as possible, and given that the rod only allows movement along it, would move to the closest point possible. I notice a lot of sideways forces on your setup.

[Tym4LeighAnne]

Response to Fuelban.... With magnetism if opposites are pushing apart the force is felt on both objects respectively...so in magnetic levitation (on a scale) the scale gives way to feel and register weight ... Wouldn't it have to also feel the equal force of the respective push for the levitation? Thus changing the weight by pushing down on the item on the scale with energy equal to that ; that is pushing up on the levitating item.

[Tym4LeighAnne]

What is the material of the shaft.. if it is magnetic than this could have an adverse effect and be why the slider stays in the same zone when flipped either way

[austinober]

try taking the rod off and stick a ball bearing in the middle the results should be interesting. much appreciated never have seen this type of magnetic levitation before

[fuelban]

levitation...... put magnetic assembalys on to a set of kitchen scales, once weight recorded, add your levitation item, if weight increases, NO LEVITATION if on the other hand WEIGHT NOT INCREASED by additional weight, YOU HAVE LEVITATION, definition ..... levitation not affected by pull of gravity.

two magnets in a tube opposing, yes it looks like lift, but youll find all 3 parts weigh in the same,,,, all the time,,, not levitation....

thom.

[oskamunda]

You guys are just silly. He has glued or soldered three pylons of three magnets on top of each other, with each magnet alternating in pole orientation.

The nut is pulled down by the top magnet until the reverse pole of the second layer magnet pushes it to a stop. If he pushes the nut with his finger past the field of the first magnet, the bottom magnet pulls it to the base will the reverse pole of the second layer magnet pushes it also towards the base.

Just good old fabrication techniques.

[CKC90]

that is called a magnetic contradiction.

[joejayw]

Its not diamagnetism. The ferromagnetic material becomes magnetized in the same direction as the magnets it is being exposed to. The reason it is repelled at that point is because when it gets low enough between the magnets it maintains its magnetic orientation, but the magnetic field lines from the opposing poles are coming up through the center and repelling it. You don't even need to surround it with magnets. One or two would probably do the trick.