Newtons Colour Disc, On Stand

For Demonstrating That White Light Is Composed Of All The Spectral Colours Through The Additive Mixing Of The Colours. Comprising A Multicoloured Circular Disc Having Sectors Of Various Spectral Colours In Proper Proportions. On Rotating The Disc At Sufficient Speed, All The Colours Will Be Observed To Disappear By Merging Into A Single White Colour. The Disc Has A Friction Pulley And Driving Wheel With A Handle. Complete Assembly Mounted On A Moulded Plastic Base. (Disc Diameter: 200Mm)