Rank #25864 on SubscribersLevel 238 Comments: Ambassador Of Lulz
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|Date Signed Up:||10/31/2010|
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Level 180 Content: Anon Annihilator → Level 181 Content: Anon Annihilator
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Level 238 Comments: Ambassador Of Lulz → Level 239 Comments: Ambassador Of Lulz
|Times Content Favorited:||188 times|
|Total Comments Made:||593|
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latest user's comments
|#68 - Don't give a ****, jump on the cups, toss and turn, say how co…||06/29/2013 on Cup Prank||+2|
|#42 - Picture||06/27/2013 on How does one tank||+1|
|#22 - Picture [+] (3 new replies)||06/25/2013 on E3 2013||+14|
|#10 - This is a example of demonstrating Eddy Currents. The interrup… [+] (6 new replies)||06/25/2013 on Gravity Machine||+17|
#20 - karlossacramento (06/25/2013) [-]
no, the movement of the magnet induces a current inside the tube, which in return slows down the magnet due to energy conservation. the force is determined by the speed of the magnet, the strength of the magnetic field and the conductivity of the tube. the force is always pointed against the movement, therefore you can neither accelerate the magnet in the direction of travel nor levitate it.
what you can do is drop a superconductor into a inhomogenic magnetic field and it would actually float.
there is another possibilty: it involves a counductive ring and an electromagnet which is powered by an AC-source. if you set it up in the right way, you can actually shoot the ring upwards, but that still involves energy from an external powersource.
look up electromagnetic induction if you're interested
#26 - karlossacramento (06/25/2013) [-]
the better the conductivity, the smaller the velocity.
the induced Voltage is proportional the the speed of the magnet.
with the following formula:
U = R*I => I = U/R and since B is proportionate to I, you can see that the lower the ressistance, the stronger the induced magnetic field for a fixed velocity and therefore a stronger force that is slowing down the movement. that means for a higher conductivity of the tube, the magnet falls slower.
about graphene: I'm not entirely sure if it is possible to reproduce this effect with graphene, since graphene is a material with the thickness of an atom(which might interfere with inductive events) and its conductive properties are not comparable to metallic conductivity. maybe it's possible, maybe it's not.
#17 - anon (06/25/2013) [-]
it can actually be done with an empty toilet roll packed in with foil
|#12 - Chinfinite beauty.||06/25/2013 on I went to public school...||+15|
|#23 - Saved him the pain.||06/25/2013 on Summer||+24|
|#16 - Picture||06/24/2013 on Welcome to Russia!||+7|
|#37 - I have one of these models also. The top of the mask has 2 goo…||06/24/2013 on Shit my pants||0|
|#114 - Gentlemen||06/24/2013 on Bad Luck Edward Snowden||+14|
|#1 - Picture||06/22/2013 on Opening door in convenience...||0|