Quick Answer: The Magnetic Field Demonstrator is a set of four transparent plastic plates, each with 98 small chambers holding iron rods that act effectively as plotting compasses to show a magnetic field's configuration.
Last updated: October 2026
Key Features
Four transparent plastic plates, 153 mm x 76 mm x 6 mm
Each plate has a 14 x 7 matrix of 98 small circular chambers
Each chamber holds an iron rod that works effectively as a plotting compass
Plates can be arranged as one large surface or as faces of a cube
Suitable for use on an overhead projector
Technical Specifications
Specification
Value
Plates
Four, transparent plastic
Plate size
153 mm x 76 mm x 6 mm
Chambers per plate
98 (14 x 7)
Chamber contents
Iron rod
About This Product
The iron rod in each chamber behaves effectively as a plotting compass, so the plates show the configuration of a magnetic field in one or two dimensions. They can be arranged in various ways, for example as a single large two-dimensional surface or as the faces of a cube, and being transparent they can be used on an overhead projector.
Frequently Asked Questions
Q1. Can the plates be shown on a projector? Yes. The plates are transparent, so they are suitable for use on an overhead projector.
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