"The spikes are still liquid. With a latex glove you can stick your finger into the pile of spikes and feel that the fluid really wants to stay near the magnet. I was able to force my finger in there but I could feel the fluid squeezing back in around my finger! I don't think the density in g/cm3 changed but I haven't tried to measure it. A great experiment for a science fair would be to actually measure any change in density!"
- electricmic @xxSeaTownTrout