To learn about the chemical pigments of some plant-based dyes. Ask students to name some different plants or plant parts they think could be used to make dye. Discuss dyes and how inks can be made ...

The variation in particle size of mineral pigments leads to differences in hiding power, primarily attributed to the phenomenon of light scattering. This phenomenon contributes to smoother color ...

Analyses of primate visual pigments show that our color vision evolved in an unusual way and that the brain is more adaptable than generally thought To our eyes, the world is arrayed in a seemingly ...