Hi, I love the color blue. Do you?
Yes, it is one of my favorite colors. Blue is used in a lot of art and decoration.
It reminds me of the ocean and sky. Why is that do you think?
Oh definitely, but the sky and sea are only blue because of an optical effect called Rayleigh scattering.
Rayleigh scattering? Please enlighten me as to what this is. 
It seems rather complicated. It has to do with scattering of light and radiation by particles that are smaller than the wavelength of radiation.
Yes looks like its a branch of particle physics. I am not very good at learning physics!
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
, ‘That one take for me, for she is upright in my eyes.’” And the Baraita taught that the passage in “you shall stray after,” refers to promiscuity, which the prophets used as a metaphor for idol worship, as says, “The children of Israel again went astray after the Be’alim.”
It was taught in a Baraita that Rabbi Meir used to ask why specified blue from among all the colors for the fringes. Rabbi Meir taught that it was because blue resembles the color