Soft-eye square dance decomposition

(1) Due to the different wavelengths of light with different colors, the degree of refraction through the prism is different. After white light passes through the prism, red, orange, yellow, green, blue, indigo and purple bands appear on the screen from top to bottom, which is the dispersion of light.

(2) Outside the red spectrum of red, orange, yellow, green, blue and indigo, it is infrared light, and outside the purple spectrum, it is ultraviolet light. Infrared light and ultraviolet light are invisible light, which can be used to check money.

(3) The three primary colors of colored light are red, green and blue; It is white after mixing.

So the answer is: dispersion; Infrared ray; Ultraviolet rays; Ultraviolet rays; Red, green and white.