|Oct15-11, 11:43 PM||#1|
So I want to levitate....(drum roll please)....A REALLY SMALL WORM!!!
First off, I read that the downward pull on the worm will be gr (gravity times density), so then how would I calculate how powerful my magnet would have to be to balance this force?
So thats the mathematical part...
Now, what else can I do with this experiment? I want to test stuff, not just levitate a worm (although levitating a worm is still awesome). Any suggestions?
|Oct16-11, 08:08 AM||#2|
I am afraid - levitating even small warm seems impossible without use of the strongest magnets in the world.
Famous Frog of Nijmegen levitated in a field of 16T magnet.
Size of the warm doesn't really matter (unless you want to levitate the elephant) - it is water diamagnetism which causes levitation, and as long as the object is smaller than magnet yoke - it makes no difference if it has 1mm or 1cm.
To levitate water (or any living creature, built mostly of water) you must create magnetic field gradient bigger than 1400 T2/m
|Oct16-11, 04:42 PM||#3|
Awww...well what are some easy levitating resources? I know that theres a special type of graphite that works well...any other?
|Oct16-11, 05:18 PM||#4|
Graphite seems to be easiest one.
But bismuth may work too.
Long time ago I used to demonstrate for students levitation with 1T permanent neodymium magnets and a cube 1cmx1cmx1cm or so of metallic bismuth.
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