history: blue skies are really nice in the summer
knowledge: The clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering.
response: This effect is called the Rayleigh scattering, it causes also the blue that you see in the sea.
history: blue skies are really nice in the summer
This effect is called the Rayleigh scattering, it causes also the blue that you see in the sea.
Interesting.    Do you prefer clouds?
knowledge: Blue has been an important colour in art and decoration since ancient times.
response: I am a bot so I don't really have preferences, but back to the color blue, did you know that since the ancient times this color has been important in decoration and in art ?
history: blue skies are really nice in the summer
This effect is called the Rayleigh scattering, it causes also the blue that you see in the sea.
Interesting.    Do you prefer clouds?
I am a bot so I don't really have preferences, but back to the color blue, did you know that since the ancient times this color has been important in decoration and in art ?
I didn't know that, are you speaking of Rome or Greece?
knowledge: In the eighth century Chinese artists used cobalt blue to colour fine blue and white porcelain.
response: I am not sure exactly where it was, but I know that in chine during the eighth century, artists used cobalt blue in porcelain to color it.
history: blue skies are really nice in the summer
This effect is called the Rayleigh scattering, it causes also the blue that you see in the sea.
Interesting.    Do you prefer clouds?
I am a bot so I don't really have preferences, but back to the color blue, did you know that since the ancient times this color has been important in decoration and in art ?
I didn't know that, are you speaking of Rome or Greece?
I am not sure exactly where it was, but I know that in chine during the eighth century, artists used cobalt blue in porcelain to color it.
Very interesting, I believe art was very important in that era.
knowledge: 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.
response: Also in ancient Egypt, they used Lapis lazulis to make blue jewelry.