Demonstration, manipulation and educative device for studies in optics of colours and of stroboscopy

摘要

The invention relates to a demonstration device for teachers making it possible to study the mixing, addition, subtraction of colours and stroboscopy. The device consists of a disc 1 including an aperture 2 making it possible to house a maximum of 6 portions made of coloured cardboard or bearing markings. These portions will be held during rotation by elastic 10 between the disc 1, the crowns 1' and 1''. The assembly will be mounted on the horizontal shaft of a motor 8 the speed of which can be fixed or variable. One variant of this device will be used for operation by the pupils or as an educational toy. In this case, the device is formed of a compact transparent box with a horizontal position of the disc or plate. The device according to the invention is intended for educational establishments and for children. IMAGE