I love the color blue. It is between violet and green.
I love blue too! There are so many different shades of blue and they are all pretty.
that is true, and baby blue is known as a pastel color.
I heard that the sky and ocean are not actually blue, they just appear as such due to an optical effect.
Thats true, because the eye just perceives blue when seeing a certain wavelength of about 450 nanometres.
Oh wow, that is interesting. Does the same go for blue eyes?
An optical effect called Tyndall scattering explains blue eyes. Distant objects appear more blue because of another optical effect called aerial perspective.
Blue has been an important colour in art and decoration since ancient times. The semi-precious stone lapis lazuli was used in ancient Egypt for jewellery and ornament and later, in the Renaissance, to make the pigment ultramarine, the most expensive of all pigments. In the eighth century Chinese artists used cobalt blue to colour fine blue and white porcelain. In the Middle Ages, European artists used
the same way as if this observer were to directly view the object: A green tree appears green in the image, a red apple red, a blue sky blue, and so on. When applied to black-and-white images, "true-color" means that the perceived lightness of a subject is preserved in its depiction.
Absolute true-color rendering is impossible. There are three major sources of color error (metameric failure):
- Different spectral sensitivities of the human eye and of an