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How can changing the intensity of red or green light change yellow into orange?
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colour
The RYB color model is being illustrated on a color wheel.
In the context of optics, yellow is produced through additive mixture when beams of red and green light overlap in equal intensities.12
Because this process relies on the relative proportions of light, you can shift the resulting hue toward orange by altering the intensity of these components:
- Increasing Red: If you add more red light to the existing mixture, the balance shifts, causing the yellow to transition into orange.12
- Decreasing Green: Alternatively, if you reduce the intensity of the green light while keeping the red constant, the mixture will similarly shift from yellow toward orange.1
This demonstrates the principles of the RGB colour model, where varying the ratios of the primary colours allows for the creation of a wide gamut of hues.12