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 ...

Did you know that phosphorus is attracted to and clings to iron filings? Phosphorus is a pollutant. It comes from stormwater runoff, sediment erosion, grass clippings, lawn fertilizer, and pet waste.

A tube filled with iron filings is magnetized and the magnetization is shown using a compass. Note: this demonstration can be shown on the overhead projector and is appropriate for large lecture halls ...

The method chosen depends upon the type of mixture. A mixture of iron filings and sand can easily be separated using a magnet. The iron filings are attracted to the magnet, but the sand is not.