View Single Post
Apr8-09, 07:31 AM
Sci Advisor
PF Gold
P: 6,236
Quote Quote by cragar View Post
what do you mean by ferro magnetic
Probably what you mean by "magnetic". "is attracted by a magnet". It is only in ferromagnetic materials that this phenomenon is strong enough to be easily noticed. Many materials have some form of magnetism, which goes under the names of diamagnetism and paramagnetism, but these are small effects compared to ferromagnetism. You need sensitive lab tools to observe it.