 alucard6650
Male, 70 & Over, Australia
 17 Posts
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Tuesday, August 25, 2009 11:41:48 PM
nice lol |
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 konablend
Male, 18-29, Western US
47 Posts
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Tuesday, May 26, 2009 11:08:10 PM
I actually know how this works , lol. The "nut" is actually a magnet, the pipe is copper, a non-ferrous metal, so it wont be attracted to, or by the magnet. However, copper, when in the presence of a moving magnetic field will generate an electrical current, or in this case, an opposing magnetic field, slowing the descent of the magnet through the pipe. Kids, try this at home. |
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 VomitStorm
Male, 18-29, Europe
99 Posts
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Tuesday, May 26, 2009 11:33:29 AM
dairy is a retard, go back to reading tabloids and watching britains got talent you lame fag |
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 polkafromny
Female, 18-29, Eastern US
254 Posts
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Monday, May 25, 2009 12:51:42 AM
omg this is cool ^^ |
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 idiotfilter
Male, 13-17, Midwest US
1123 Posts
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Sunday, May 24, 2009 10:05:30 AM
that....was....so....cool... |
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 Tonyjet
Male, 18-29, Western US
3097 Posts
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Saturday, May 23, 2009 5:35:26 PM
they looked like magnets |
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 DavioMagnifi
Male, 13-17, Midwest US
366 Posts
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Saturday, May 23, 2009 2:56:50 PM
"so....what exactly was cool about that video? like...did anything special happen to the nut as it fell down the pipe??"Are you really that stupid? the nut slowed down. God pay attention or just go to e baums world or something |
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 dairy
Male, 18-29, Europe
378 Posts
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Saturday, May 23, 2009 10:41:31 AM
so....what exactly was cool about that video? like...did anything special happen to the nut as it fell down the pipe?? I really dont understand physics... |
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 CreamKreator
Male, 30-39, Europe
36 Posts
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Saturday, May 23, 2009 6:27:18 AM
http://www.youtube.com/watch?v=fxC-AEC0R... the same effect but reversed, big magnet (MRI) and aluminium block. |
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 Masticore
Male, 18-29, Western US
109 Posts
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Saturday, May 23, 2009 4:24:37 AM
>can you use any copper tube?you need any tube that can conduct electricity in a loop around its circumference. Copper is one such material. The harder thing to get, really, is an appropriate magnet to drop down the tube. |
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 toans
Male, 13-17, Australia
394 Posts
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Saturday, May 23, 2009 4:19:00 AM
can you use any copper tube?
i wanna try this |
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Masticore
Male, 18-29, Western US
109 Posts
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Saturday, May 23, 2009 4:08:54 AM
>It can't actually stop it though, since if it did there would be no current and therefore no field to hold it.Correct. This is the same reason that induction motors always run at a speed that is slower than the rotating magnetic field. >opie To be fair, this is deep enough into the minutiae of electromagnetism that you really need vector math to describe what is going on. And when you dive into vector calculus, you find funny things such as integrating the curl of a field around a perimeter, and the integrating the flux of the same field through a surface bounded by that perimeter, and getting the same answer. |
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 opiebreath
Female, 18-29, Midwest US
14283 Posts
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Saturday, May 23, 2009 1:31:53 AM
Aaaand this is why I'm bad at physics.o_O |
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xmastree_ph
Male, 40-49, Europe
106 Posts
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Saturday, May 23, 2009 12:28:07 AM
Sweet! Its the leftover charge from a solenoid isn't it?If I remember from college, the falling magnet induces current in the copper tube. That current creates a magnetic field which tries to stop the magnet falling. It can't actually stop it though, since if it did there would be no current and therefore no field to hold it. |
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 superdud3
Male, 18-29, Western US
248 Posts
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Friday, May 22, 2009 11:53:38 PM
hurra for magnets and their awsome slomo falling levitating abilitys |
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 iluvpink13
Female, 18-29, Canada
1418 Posts
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Friday, May 22, 2009 11:15:20 PM
looks like magnets |
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 Binary101
Male, 13-17, Asia
847 Posts
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Friday, May 22, 2009 9:50:53 PM
Sweet! Its the leftover charge from a solenoid isn't it? |
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tnaran
Male, 30-39, Canada
101 Posts
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Friday, May 22, 2009 9:25:13 PM
Yes, neudynium magnets: http://en.wikipedia.org/wiki/Neodymium_m...My favorite demonstration of eddy currents was the director of a company that makes MRI's in England. He took an aluminum disk (aluminum is not a ferro magnet so you can bring it into strong magnetic fields), put it upright inside the MRI chamber then let it go. It fell in slow motion because of eddy currents. Now do you know why Magneto was the most powerful mutant in the X-men universe? 
(I know, I know, he wasn't, but it was a good ending line for me) |
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 Sajo
Male, 18-29, Eastern US
426 Posts
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Friday, May 22, 2009 8:37:33 PM
@ Randy: Didn't see his nose, don't know if it's a carrot or not!Ontopic: That was pretty awesome. |
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 drummfreak
Male, 13-17, Eastern US
61 Posts
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Friday, May 22, 2009 6:03:59 PM
ive done that before ecept it was my friend and giant kiddyslide.....nah not really i just wanted to feel special but thats still awesome |
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 SPARTAKITTY
Female, 18-29, Midwest US
448 Posts
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Friday, May 22, 2009 4:28:26 PM
@RandyTheFool
Does he weigh the same as a duck? |
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 CrakrJak
Male, 40-49, Midwest US
2691 Posts
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Friday, May 22, 2009 2:28:02 PM
This is sort of related to this.
Floating Magnet |
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 unreedemed
Male, 13-17, Western US
547 Posts
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Friday, May 22, 2009 2:01:25 PM
thats cool :DD
is it magnets?
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 RandyTheFool
Male, 18-29, Western US
805 Posts
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Friday, May 22, 2009 1:55:05 PM
D3: "WHAT THE SH*T?
WITCH!
KILL IT WITH FIRE!"How do you know he's a witch? Did he turn you into a newt (and then you got better)? |
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 Link_Hiei
Male, 18-29, Eastern US
2210 Posts
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Friday, May 22, 2009 1:39:46 PM
*Watches it 3 times*Awesome. |
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