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Product InformationIn this powerfully visual demonstration of the electromagnetic field, compasses are placed around a wire coil in the center of the circuit board and students note the direction the compasses are pointing. When the board is turned on, the change in compass direction is immediate and dramatic. Developed by Brent Butler. Includes instructions. Battery required, but not included. Grades 8–12. Size: 28.3 x 22.2 x 10.2cm. Tell a Friend about this item
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