The levitation tag has no wiki summary.
4
votes
2answers
193 views
How can I cause a levitating magnet to rotate?
I have a device like this one:
http://www.youtube.com/watch?v=kA_hw_lY-OY (All of them work the same)
Here's an image:
I want to make it spin without touching it with hands.
I tried using magnets ...
3
votes
3answers
105 views
What is the missing proportionality constant in the magnetic levitation formula?
The formula for magnetic levitation is
$$ B \frac{dB}{dz} = \frac{ \rho g }{\chi} $$
but as always, I have a hard time figuring the units in SI. The left hand side is $\mathrm{T^2 /m}$, while $\chi$ ...
3
votes
2answers
119 views
How do magnetically levitated trains (maglevs) stay on the tracks?
Just went on one yesterday, and had a bit of a thrill.
And I was musing on the fact that electromagnetic forces are so strong, that they can keep a whole train up in the air.
But then, wouldn't ...
