Questions about magnets.

[jgannon]

Originally Posted by Joe Ross

Try here for strong magnets: http://search-desc.ebay.com/Neodymiu...Z2QQsacatZ1266

I second that. Neodymium magnets are as strong as they get, and eBay is always a fantastic place for good deals.

[Kevin Sevcik]

*rubs hands together* Boy are you in for it....

http://www.amazingmagnets.com
http://www.engconcepts.net/
http://www.wondermagnet.com
The last one also has ferro-fluid.

Also, in response to to one pole of a magnet being "stronger" than another... If a magnet is symmetrical on a plane perpendicular to the poles, then they're the same strength. You can increase the surface gauss at one end by tapering it to a point, however. It doesn't matter if this end is a N or S pole, however.

For lots of info on magnets and stuff, see:
http://www.dansdata.com/magnets.htm
http://www.dansdata.com/magnets2.htm

[sanddrag]

Originally Posted by Kevin Sevcik

http://www.wondermagnet.com
The last one also has ferro-fluid.

That stuff is really cool. I saw on TV something sort of like that which they were developing to use as fluid in off-road racing shocks to essentially change the viscosity in a matter of miliseconds.