User:Gaius Cornelius/Magic slate



The magic slate, also known as the mystic writing pad is a writing surface upon which marks may be made with a stylus and then quickly and easily erased.

A magic slate comprises a dark waxy surface overlaid by a translucent light coloured sheet with a small air gap between the two materials. These two layers are usually covered by a protective transparent plastic layer. Why pressing onto the top surface with a stylus the translucent surface is pushed into contact with the waxy surface below; it sticks where contact is made and this eliminates the air gap so that a dark mark can be seen. The marks can be erased by restoring the air gap, this may be done by pulling the translucent layer away from the waxy surface or by sliding an erasing bar between the waxy and translucent surfaces.