Magnet + Copper Tube = Awesomeness. .. Any other electrical engineers or physicists here? BTW, Lenz's law and how the eddy currents induced in the copper piping produce a resistive effect on the magn
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Magnet + Copper Tube = Awesomeness

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Submitted: 10/11/2013
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User avatar #36 - thelastamerican (10/12/2013) [-]
Whatchoo know about eddy currents?
User avatar #30 - berrabuz (10/12/2013) [-]
Lenz mah niggu
#28 - jonnyea (10/11/2013) [-]
I'd like to put my copper in your mom's tube
User avatar #35 to #28 - muralriver (10/12/2013) [-]
That wasn't even a pun
User avatar #27 - cmcdftw (10/11/2013) [-]
Try it with a superconductive magnet and Chilled metal.... Its a bit cooler XD No pun intended
User avatar #17 - onlyanonymous (10/11/2013) [-]
i notice that his hand jerks right after the slug falls out of the copper tube, does that mean that while the electromagnetism affects the slug that he is then holding the combined weight of the slug and the tube, or does the slug become "weightless" in perspective to the tube?
User avatar #31 to #17 - winsauceiswin (10/12/2013) [-]
the magnetic field in the magnet is inducing an electric fields in the copper tube producing two opposing fields. the hand jerk is the result of the force being exerted on the magnetic field in much the same was that you can feel a force by putting two opposing sides of a magnet together.

this is an example of induction and the effect is known as Lenz's law or "eddy currents"



trust me, i'm an engineer
User avatar #37 to #31 - thelastamerican (10/12/2013) [-]
I can back up this statement.
What you're seeing is the way that most of the power on earth is generated.
User avatar #38 to #37 - winsauceiswin (10/12/2013) [-]
yessir
#26 to #17 - klutzyspy (10/11/2013) [-]
its the loop, but to answer any way, the magnetic tube is supporting the weight of the slug, all tho contact-less.
User avatar #24 to #17 - thebannedzombie (10/11/2013) [-]
Or maybe that's the point where the gif loops?
User avatar #15 - whynotzoidberglol ONLINE (10/11/2013) [-]
This can also be produced with aluminum. But you have to have a strong magnet, really.
User avatar #12 - gammajk (10/11/2013) [-]
To anyone wondering what they're looking at - magnetic fields, when they move through a conductive material, produce an electric current in that material. All electric currents also produce a magnetic field around them. So the magnet is falling through the tube, and the magnetic field of the magnet induces a current in the tube, which in turn produces its own magnetic field, which interacts with the magnet, slowing its fall.
User avatar #11 - demandsgayversion (10/11/2013) [-]
Fake, it's just a wizard
User avatar #10 - manofparody (10/11/2013) [-]
I don't understand what I'm looking at...
User avatar #7 - omfgitsabear (10/11/2013) [-]
I'm thumbing this just because I went on a 3 hour youtube spree on how to melt metal, and I think I might have discovered a new hobby.
0
#8 to #7 - omfgitsabear has deleted their comment [-]
#2 - indodude **User deleted account** (10/11/2013) [-]
Any other electrical engineers or physicists here? BTW, Lenz's law and how the eddy currents induced in the copper piping produce a resistive effect on the magnet's magnetic field.
User avatar #40 to #2 - Mickeyboi (10/23/2013) [-]
EE major here
#33 to #2 - neurofuzzy (10/12/2013) [-]
woooOOOOO PHYSICS!   
I just made the gif :3   
(no real physical meaning, just a fun ODE over a bunch of values)
woooOOOOO PHYSICS!
I just made the gif :3
(no real physical meaning, just a fun ODE over a bunch of values)
#34 to #33 - neurofuzzy (10/12/2013) [-]
ugh damned thumbnail compression. shoulda resized it. oh well.
User avatar #32 to #2 - mhden (10/12/2013) [-]
if i remember correct they used that principle to slow down the world land speed record holder using magnetic breaks .Remember seing it on Discovery.
User avatar #14 to #2 - goobyman (10/11/2013) [-]
not an angineer and i know this, however, do you have a formula for this?
#16 to #14 - indodude **User deleted account** (10/11/2013) [-]
N = turns of wire(copper pipe in this case) * [Change of flux / change of time). The negative just shows how the opposing eddy currents produce an opposite flux of that of the magnet.
N = turns of wire(copper pipe in this case) * [Change of flux / change of time). The negative just shows how the opposing eddy currents produce an opposite flux of that of the magnet.
User avatar #20 to #16 - goobyman (10/11/2013) [-]
V=-10(7.3/10(seconds))
Delta theta= change in flux= weber (SI), right?
Delta T= change in time= seconds, hopefully?
V= volts?
-10*0.73=
-7.3 (volts? Resistance in newtons?)
#21 to #20 - indodude **User deleted account** (10/11/2013) [-]
Correct, also for quick theory, 1 volt = delta 1weber/second. But, that symbol was phi, not theta. But yeah, correct.
User avatar #22 to #21 - goobyman (10/11/2013) [-]
thank you very much
not sure if when i grow up i want to be an engineer or something else....
#23 to #22 - indodude **User deleted account** (10/11/2013) [-]
If you don't love engineering, what ever you do, don't go into it. Being an engineer is one of the worst possible jobs you can have if you don't love your work.
User avatar #18 to #16 - goobyman (10/11/2013) [-]
thank you very much sir. as i am 15(almost 16) i can barely do anything wit this, i'll make up some numbers and calculate it and you tell me if it's correct, ok?
#19 to #18 - indodude **User deleted account** (10/11/2013) [-]
Mkay
#4 to #2 - moechler (10/11/2013) [-]
I'm a pupil and I know this... not necessary to be an engineer
User avatar #3 to #2 - adu ONLINE (10/11/2013) [-]
I accidentally made a heat coil once with some copper wire and a battery, if that counts.
#1 - mausisdead (10/11/2013) [-]
Comment Picture
User avatar #5 to #1 - dabronydude (10/11/2013) [-]
i know little of this stuff but
if you could build bigger versions of this couldn't you have a way to smelt
metal using nothing but magnets?
#6 to #5 - mraye (10/11/2013) [-]
Couldn't this be an... no wait it needs an electric current.
User avatar #9 to #6 - omfgitsabear (10/11/2013) [-]
Magnets aren't actually involved here. It's just a wound copper tube connected to a high power source.
Source: www.youtube.com/watch?v=Q6Zrnv4OtbU
User avatar #13 to #9 - xplosevdiarrhea ONLINE (10/11/2013) [-]
a wound copper tube connected to a power source is a magnet. Specifically an electro-magnet.
#39 to #13 - omfgitsabear (10/13/2013) [-]
...Well 						****					 me lol. Thanks for clearing that up, because I honestly had no idea. Now I feel like an 						*******					.
...Well **** me lol. Thanks for clearing that up, because I honestly had no idea. Now I feel like an ******* .
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