Quote
"Rain, rain, and sun! a rainbow in the sky!"
"So the rainbow appear, The world hath no fear, Until thereafter forty year."

A rainbow is an optical phenomenon caused by refraction, internal reflection and dispersion of light in water droplets resulting in a continuous spectrum of light appearing in the sky. The rainbow takes the form of a multicoloured circular arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the sun. Rainbows can be caused by many forms of airborne water. These in
"Rain, rain, and sun! a rainbow in the sky!"
"And, lo! in the dark east, expanded high, The rainbow brightens to the setting Sun."
"My heart leaps up when I behold A rainbow in the sky! So was it when my life began; So is it now I am a man; So be it when I shall grow old, Or let me die!"
"Some day Ill wish upon a star And wake up where the clouds are far behind me Where troubles melt like lemondrops Away above the chimney tops, Thats where youll find me. Somewhere over the rainbow Bluebirds fly. Birds fly over the rainbow, Why then, oh why cant I?"
"Through gloom and shadow look we On beyond the years! The soul would have no rainbow if the eyes had no tears."
"O beautiful rainbow;—all woven of light! Theres not in thy tissue one shadow of night; Heaven surely is open when thou dost appear, And, bending above thee, the angels draw near, And sing,—"The rainbow! the rainbow! The smile of God is here."