or Educational Innovations Some craft stores in their science project section Online educational suppliers Some teacher supply stores Make sure to get fine iron filings specifically meant for science ...

Iron filings fall between two pieces of plexiglass while ghostly numbers appear, counting down 30 seconds. Just as quickly as they appear, the numbers disappear – dropping down to the bottom of ...

Although we cannot see magnetic field lines, we can detect them using iron filings. The tiny pieces of iron line up in a magnetic field.