Right Hand Rule Key Thing!
thingiverse
This is a handy little key chain? fob? it has a hole to go on a key ring. It features x,y & z directions, current flow I and its electric field B and shows the direction of axb when you take the cross product of the two vectors. I think it would make a nice gift for any up and coming engineers, physicists or mathematicians. Drive perfectionists crazy with the different leveling of the arrows on the z-axis. Size: 2.4x 2.4x 2.4 cm^3
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