Repetition Definition. Repetition is a literary device that repeats the same words or phrases a few times to make an idea clearer. There are several types of repetitions commonly used in both prose and poetry.
Chlorophyll looks green to us because most of the green wavelengths are reflected rather than being absorbed. For this reason, green light is not an effective color of light to power photosynthesis. Chlorophyll a and b together absorb light most effectively in the blue to violet range and the orange to red range.
Complementary Colors. Blending the primary colors in equal proportion works fine for creating white light, but one can also mix white light with just two colors of light, as long as these colors are complementary. An effective guide to use to determine complementary colors is a color wheel.