0kelseymhBest Answer 11 years ago NOTE: Please, please, please use your access to the Internet to look up terms below which you don't understand. Wikipedia is a very good resource for basic definitions and explanations of scientific terms.It depends on what you mean by "manipulate." Superconductors, by their nature, "expel" magnetic fields. If placed at the axis of a cylindrically symmetric field configuration, a chunk of superconductor can be supported against gravity (you can buy kits for this from most educational science supply vendors).Diamagnetic materials respond to external fields by polarizing themselves in a repulsive way (paramagnetic materials polarize attractively). Water is diamagnetic. This effect can be used (as "jtobako" below mentioned) to suspend biological samples (including living frogs) inside an axial magnetic field, such as that generated by a solenoid."Maglev" high speed trains function by using the repulsion between identical magnetic poles to keep the train suspended above the guide rails.