A white fence appears to be white due to the presence of photoreceptors in the retina.
What is the retina?
The retina is a layer of nervous tissue which is stimulated by sunlight, thereby leading to the vision of colors.
- This layer (retina) has two types of photoreceptors, cone cells and rod cells.
- Cone cells can detect different spectra of photons and thus they are responsible for color vision.
In conclusion, a white fence appears to be white due to the presence of photoreceptors in the retina.
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