Principle Illustrated: Magnetic lines of force
Suitable for using on an overhead projector, the
2D Magnetic Field Viewer consists of a 2D array of loosely confined metal
pins in a clear plastic case. The image shows the shape of the Magnetic
field around a bar magnet.
This demo can be found in cabinet F on shelf 3 of the UCSD PUL Demo Room
(WLH 2015).