An "arcobaleno" is the Italian word for "rainbow." It is a meteorological phenomenon that occurs when sunlight is refracted, reflected, and dispersed in water droplets, creating a spectrum of light in the sky. Typically, a rainbow appears as a multicolored arc, with red on the outer edge and violet on the inner edge. Rainbows are often associated with mythology and art, symbolizing hope and beauty. They can be seen when sunlight shines after rain, and their appearance is influenced by the angle of the sun and the observer's position. Rainbows can also occur in other contexts, such as in waterfalls or sprinklers.