context: There are usually 7 colors in white light. Light oscillation is the refraction of white light through the prism and breaks down all the colors. What color spectrum is seen when sunlight is analyzed through the prism. This is called the spectrum. These seven colors resemble the colors of the Sagittarius. They are Violet, Indigo, Blue, Blue (Green, Yellow, Yellow, Orange) and Red. Red has a longer wavelength, and red has a higher wavelength, so the sign boards along the roadside are red. Written with
question: How many colors are there in the rainbow?
answers.text: seven