Return to the Chromaticity Diagram
- (x,y,I) Space Completeness: Demonstrate that you can vary the relative eye cone response values (x,y) and the intensity of the maximal pixel emitter (I) to produce any color that can be displayed on a W3C-compatible screen.
- The Color Brown: Demonstrate how various shades of brown are produced on the Chromaticity Diagram.
- The Color White: Demonstrate that the color white is produced at any pixel by setting equal emissions from the pixel's three emitters.
- Color Shades: Describe how to determine the Diagram region representing shades of light blue and demonstrate doing it.
- Diagram Non-linearity I: Demonstrate that at any point on the diagram that is on a line between two vertices, the contribution of the third-vertex emitter is zero.
- Diagram Non-linearity II: Demonstrate that, at the visual midpoint between two vertices, the contributions of the emitters at those two vertices are not equal.
- Unique RGB Components: Explain why, at any particular (x,y,I) position within the RGB boundary, there is a unique set of RGB contributions.
- No Photon Color can be a mixture: Use the Diagram to explain why no photon color can be a mixture of photon colors.
- All non-photon colors are mixtures: Use the Diagram to explain why every non-photon color must be a mixture of photon colors.
- No Photon Colors on the Screen: Use the Diagram to explain why no photon color can be shown on a W3C-compatible screen.
- Non-Unique Photon Components: Explain why there are an infinite number of different photon combinations (spectra) that will produce any given color inside the Chromaticity Diagram boundary made by the visible-photon locus and the straight line connecting the two limits of the locus.
- A Color's Spectrum: If a spectroscope is available show that it can be used to see the mixture of photons which are being used to produce any particular light-beam color.
- Explain that the colors in the Chromaticity Diagram refer to the colors of light beams and not to the "colors of objects" (the colors of light beams coming from objects).
- Describe the journey of a photon from an emitter in the interior of the sun to an absorber in the interior of the eye.
- Describe what is known about the journey of a nerve signal from a photon-absorber pixel in the interior of the eye to a consciousness of the pixel color in the brain.
- Describe how the "color of an object" (the color of a light beam coming from an object) can be calculated from the spectrum of the light incident upon the object plus the spectral reflectivity data for that object's surface.
© Project Physnet, 2019; Contact: Peter Signell, email@example.com