This apparatus is designed to enable students to investigate the properties of an a.c. generator as used in a bicycle dynamo. A permanent magnet rotates inside a coil of wire. As the field through the coil changes a current is induced in the coil and this is brought out to two 4mm sockets.
The Lascells E-Field Detector provides a new and novel way to demonstrate charge. This highly sensitive electronic device is an essential piece of equipment in the Physics teachers’ armoury as it can detect very small charges and their polarity, as well as charge at a distance.