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! 
Yeah me neither. I guess blues are because of optical effects, which is why distant objects appear more blue as well.
Is blue also one of the primary colors?
Blue
Blue is one of the three primary colours of pigments in painting and traditional colour theory, as well as in the RGB colour model. It lies between violet and green on the spectrum of visible light. The eye perceives blue when observing light with a dominant wavelength between approximately 450 and 495 nanometres. Most blues contain a slight mixture of other colours; azure contains some green, while ultramarine contains some violet. The clear daytime sky and the deep sea appear blue because of an optical effect known as Rayleigh scattering.
, ‘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