Magnetic Sand Timer
A magnetic field traps iron sand to build an enthralling structure!
Mesmerizing and fun to watch, the Magnetic Sand Timer uses the power of magnetism to sculpt iron filings into a hemisphere of craggy spikes.
How does it work? The magnet in the base has a magnetic field that attracts the iron filings. Iron is a ferrous element, meaning that it has atoms with unpaired electrons spinning in one direction. The electrons encourage nearby iron atoms to align and spin in the same direction. In this way, the more atoms working together, the stronger the magnet. Magnetic fields are weaker the farther from the magnets center, so the iron sculpts a visible representation of the field's size and strength every time the timer is flipped!
Intended for ages 14 and up.
Made of glass. This is not a toy. Handle with care.