This sealed acrylic observation box reveals magnetic fields the way only 3D presentations can! With iron filings suspended in a solution, students create three dimensional lines of force simply by dropping a cylindrical magnet (included) into the central chamber. They can produce amazing interactions between the fields by applying other magnets to the sides or ends of the box. Though designed for individual study, the box can be placed on an overhead projector for a two dimensional demonstration with no filings to clean up: 3" x 3" x 3" cube.
Activities and uses
Use the 3D Magnetic Field Observation Box to study magnetic fields in three dimensions. Look at the field from a single provided magnet or bring iron or another magnet near and see the results.
A sample activity from the datasheet is given below.
Bring another magnet close to the box and insert the bar magnet in the hole. The iron powder is magnetized in two areas showing attraction and repulsion of magnetic forces.
In using this product, many of the national and states' science education standards are covered. Some examples are provided here. These are representative, however. Check with your state to find the exact standards.
- Students can create a representation of magnetic field lines around a bar magnet and qualitatively describe how the relative strength and direction of the magnetic force changes at various points.
- Students understand that magnets exert forces on all objects made of ferromagnetic materials (e.g. iron, cobalt, and nickel) as well as other magnets.
- Students can describe the forces exerted by magnets, electrically charged objects, and gravity.
- Students understand that magnetic forces act at a distance.
- Students know electric and magnetic fields contain energy and act as vector force fields
- Students understand that magnetic fields accompany magnets and are related to the strength and direction of the magnetic force.