Quick Answer: The Additive Colour Synthesis Apparatus projects red, green and blue light onto a neutral screen so students can see the overlaps form cyan, magenta, yellow and near-white light. Each colour channel has its own intensity control.
Last updated: October 2026
Key Features
Red, green and blue light channels
Independent colour intensity control
Overlapping beams form cyan, magenta and yellow
Balanced red, green and blue give near-white light
Technical Specifications
Specification
Value
Light channels
Red, green and blue
Control type
Independent colour intensity control
Included
Main unit, red, green and blue light source arrangement, instruction sheet
Mixing coloured light on a screen makes it easy to contrast additive colour mixing with the subtractive mixing of pigments and filters. Changing the intensity ratios shows how displays, cameras and digital images build colour from three channels.
Frequently Asked Questions
What colours appear where the beams overlap?
Red, green and blue overlap to give cyan, magenta and yellow, and all three balanced together give near-white light.
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