light refracts when it passes through water droplets
light_propagation_through_liquid is not wave_propagation. red_light is light_wave. red_light is not light_wave. green_light is light_wave. light is refracted_by_water. light_water is protiated_water. green_light is not light_wave. light_water is not water. light_water is water. light is not refracted_by_water.