Quick Answer: Newton Colour Disc Model is a coloured disc on a rotational arrangement and base; when its sectors representing the spectral colours are spun rapidly, the eye blends them into white or nearly white light.
Last updated: October 2026
Key Features
Coloured disc with sectors representing spectral components
Rotational arrangement with support system and base
Turned by hand or by the provided method
Shows white light composition and persistence of vision
Technical Specifications
Specification
Value
Construction
Coloured disc, rotational arrangement, support system, demonstration base
The disc is mounted on its rotating arrangement and spun, and during rapid rotation the separate colours merge for the viewer. This Physics Miscellaneous Products model is used to explain colour mixing and the persistence of visual impression.
Frequently Asked Questions
Q1. Why does the disc look white when it spins? When the coloured sectors rotate rapidly, the eye blends them to give the appearance of white or nearly white light.