Daily Archives: April 30, 2014


In a liquid, the highest density liquid is at the bottom of the container.
Traditional density columns layer immiscible liquids (ones that won’t mix), such as oil and water. One advantage of this type of density column is that you can shake the container and the liquids will separate. One disadvantage to using immiscible liquids is that you quickly run out of either readily […]

Easy Rainbow Density Science Project


Lithium-Iron Nitrogen Magnet
Rare-earth magnets are a type of permanent magnet with high magnetic strength. A magnet’s strength is due to two factors: field strength and anisotropy. Field strength is the magnitude and direction of the magnet’s magnetic field. Anisotropy is the ability of the magnet to maintain its direction of the magnetic field. Rare-earth […]

Making Rare-Earth Magnets Without Rare-Earth Elements