Homopolar motor demonstration

	Duration: 00:25 minutes Upload Time: 06-08-07 03:06:30 User: oskay :::: Favorites
Description: Read more at http://www.evilmadscientist.com/article.php/HomopolarMotor
Comments
SlavaVB ::: Favorites I realize this, thats not what im implying though. 07-06-06 07:21:11 _____________________________________________________
reachingthenirvana ::: Favorites But....How long does the battery last? Where could I get that magnets? Thanks from Spain! 07-06-07 10:47:50 _____________________________________________________
oskay ::: Favorites The current is very high, so the battery can be killed in a matter of a few minutes. But, it's worth it. =) I don't happen to know any sources of magnets like these in spain, but there are a lot of different sources, and many will ship internationally. Search for "Rare earth magnets" or "Neodymium magnets" and pick a set of *shiny* cylindrical magnets. (Some have a rubber or paint coating, and will not work-- you need the shiny, conductive exterior.) 07-06-07 11:01:05 _____________________________________________________
reachingthenirvana ::: Favorites Wow, thanks for that piece of advice! That's very kind of you, man!! 07-06-07 14:22:58 _____________________________________________________
pjaxy ::: Favorites i've seen the explanation on how this works in your website "evilmadscientist article.php SimpleMHD". the last two pictures show the direction of force pointing AWAY. but F = Il x B. if you cross the direction of the current with the direction of the magnetic field, the force should point TOWARDS 07-06-13 08:15:07 _____________________________________________________
oskay ::: Favorites And if the magnet is upside down then flip the direction.... 07-06-13 11:47:24 _____________________________________________________
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kuruka417 ::: Favorites I try this but it doesnt seem to work. I try it without the screw, and the wire still gets hot, so the battery still has some juice. Do you have any suggestions? 07-06-18 16:34:53 _____________________________________________________
oskay ::: Favorites You say the wire *still* gets hot, so electricity must be flowing when you do have the screw in place. All that I can think is that your magnet isn't the right type. Make sure (1) that it's a neodymium disk magnet with a conductive metal coating (2) that it is a strong magnet (not demagnetized) (3) polarized through the symmetry axis of the disk. And try a new battery anyway, just in case. 07-06-18 17:04:37 _____________________________________________________
kuruka417 ::: Favorites thanks, I'll try that. 07-06-18 22:26:48 _____________________________________________________
renatarusky ::: Favorites you may put a lamp, if you do the wire does't get so hot!! 07-07-31 19:14:14 _____________________________________________________