Eddy Current Tubes

Eddy Current Tubes -- Drop the Magnets down the tube. An eddy current is set up in a conductor in response to a changing magnetic field. Lenz's law predicts that the current moves in such a way as to create a magnetic field opposing the change; to do this in a conductor, electrons swirl in a plane perpendicular to the changing magnetic field.

Because the magnetic fields of the eddy currents oppose the magnetic field of the falling magnet; there is attraction between the two fields. Energy is converted into heat. This principle is used in damping the oscillation of the lever arm of mechanical balances.

• Category

  Science & Technology

[darkgear6]

1+1=4

[monstercameron]

free fall elevators

[Liam Hartley]

Where do these come up in everyday life?

[kenneedsmusic]

well then i don't wanna know. my paycheck would probably be very small

[jude m]

Two copper tubes, one of them is slotted, will each have a magnet dropped in them (they are both identical magnets) at the same time. Which magnet leaves the tube first and why? I need help with this question.

[Sean Burrage]

May I ask, where the hell do you find a tube like that? I went to my local plumber and they laughed at how thick-walled a tube I wanted.

[635574]

your whole life you are taught 1+1=2 but only certain education tells us |-1+1|=2. do you see the separation? why we are told nothing of [WhatOnEarthIsHappening com]?

[WWoodyW]

NO! Then only thing worse than divided by zero is dividing zero by zero! INDETERMINATE!@!

[sharperguy]

Where can I get one of these? It would be awesome to sit and fidget with.

[kemup]

these idiots divided by 0

[darthspeaks]

Lenz's Law in action! Interesting!

[straighter100]

O MY GOD.........EDDY CURRENTS!!!!!