Check to see if it takes the same amount of time to drop when the South is to the metal versus the North is to the metal. You may need a longer run. My 24" aluminum sheet is NOT long enough.
what you're probabloy seeing is th magnet's repulsion & attraction to the earth's magnetic field... place a disc magnet on edge on a smooth surface & the magnet will tumble depending upon its orientation to the earth... the same thing happens with the magnet on the Al.
I marked a magnet with north & south... & tried doing this again at different orientations to the earth's magnetic field... when the magnet is repelling the earth's field, it will tumble at a less steep inclince than when the magnet is attracted to the earth's field.
That's what the rest of us are seeing. No idea why, or what the significance of this is, but is a curious phenomena. Longer length runs are needed. A slightly less vertical angle and the magnet won't tumble but slide dowe.
ah, now see, that's what I'm now finding out. But when this was first demonstrated to me back in 1985 on pbs on a show called "the mechanical universe" (you can still see it on the annenberg website) it was explained to be kinetic energy being used up by the heat energy being created by the current in the copper of the pendulum. Nothing was said about counter magnetism.
Lenz's law states ''if a conductor experiences a change in magnetic flux, it will induce a current from the conductors ''freely hanging electrons'' which propagates in such a way that it opposes the change that created it'' therefore in the video we saw a magnet moving down a conductor at a slow rate less than 9.8ms^-1. this is because as the conductor experiences the changing magnetic feild from the magnet it generates ''eddy
currents'' which flows in a way that opposes the the downward movement of the magnet. Thus a force generates by eddy currents is pushing the magnet up and pulling it up to oppose its changing flux.
Eddy current braking is one of the coolest aspects of magnets in my opinion. I first saw this effect on a show about a land speed car that used Neo magnets and an aluminum disc for non contact brakes. Very cool effect. I think a lot of these crack pot free energy magnet motors are foiled by eddy currents. Get it? foiled-aluminum-eddy current... oh never mind :-J
Now do it with the opposite pole. You may be surprised.
shubus 2 years ago
works the same with either pole
stop4stuff 2 years ago
Comment removed
shubus 2 years ago
Check to see if it takes the same amount of time to drop when the South is to the metal versus the North is to the metal. You may need a longer run. My 24" aluminum sheet is NOT long enough.
shubus 2 years ago
what you're probabloy seeing is th magnet's repulsion & attraction to the earth's magnetic field... place a disc magnet on edge on a smooth surface & the magnet will tumble depending upon its orientation to the earth... the same thing happens with the magnet on the Al.
stop4stuff 2 years ago
I marked a magnet with north & south... & tried doing this again at different orientations to the earth's magnetic field... when the magnet is repelling the earth's field, it will tumble at a less steep inclince than when the magnet is attracted to the earth's field.
stop4stuff 2 years ago
That's what the rest of us are seeing. No idea why, or what the significance of this is, but is a curious phenomena. Longer length runs are needed. A slightly less vertical angle and the magnet won't tumble but slide dowe.
shubus 2 years ago
Neat. Still not sure how it works.
99rhetbaboons 2 years ago
Basically, as the magnet falls it creates an electric current within the Al, which in turn creates a magnetic field slowing the magnet.
stop4stuff 2 years ago
ah, now see, that's what I'm now finding out. But when this was first demonstrated to me back in 1985 on pbs on a show called "the mechanical universe" (you can still see it on the annenberg website) it was explained to be kinetic energy being used up by the heat energy being created by the current in the copper of the pendulum. Nothing was said about counter magnetism.
99rhetbaboons 2 years ago
Lenz's law states ''if a conductor experiences a change in magnetic flux, it will induce a current from the conductors ''freely hanging electrons'' which propagates in such a way that it opposes the change that created it'' therefore in the video we saw a magnet moving down a conductor at a slow rate less than 9.8ms^-1. this is because as the conductor experiences the changing magnetic feild from the magnet it generates ''eddy
th15n4m315t4k3n 2 years ago
currents'' which flows in a way that opposes the the downward movement of the magnet. Thus a force generates by eddy currents is pushing the magnet up and pulling it up to oppose its changing flux.
th15n4m315t4k3n 2 years ago
Eddy current braking is one of the coolest aspects of magnets in my opinion. I first saw this effect on a show about a land speed car that used Neo magnets and an aluminum disc for non contact brakes. Very cool effect. I think a lot of these crack pot free energy magnet motors are foiled by eddy currents. Get it? foiled-aluminum-eddy current... oh never mind :-J
theslimeylimey 3 years ago 2
Thats not aluminom that there is steel.
Aluminom isnt magnetic.
FAKE
PostTheMissing 3 years ago
pmsl...
google is your friend...
look for 'eddy current braking'
p.s. magnets stick to steel
p.p.s. there's 2 spellings for Al... Aluminium (UK english) & Aluminum (US english) these might help you with google :)
stop4stuff 3 years ago
lmao he got pwned!
rinrik 3 years ago