2021-06-29|Sunatori's Transformation (from 2 Colours to 3 Colours)
Potential Discovery or Invention
A low-wattage holiday-light decoration has 2 colours, RED and GREEN.
After being reflected by a mirror, the colourful light is projected onto the white surface of a desktop. The projected image shows an extra colour, YELLOW at the interface between RED and GREEN even though there is no prism to split colours on the light's path.
