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High quality wax crayon
rectangular backboard mounted on a 120cm extension
Ideal for use in Art/Craft/Design Technology/Textile based projects
Watch as up to 21 lights flash at random
Hundreds Boards (Laminated)
Lascells E-Field Detector Filing & Storage High quality wax crayonThe 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. Until now, in the school science lab, it has only been possible to demonstrate opposite and like charges by repulsion and attraction experiments or the very delicate Gold Leaf
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