Each color has a different wavelength. Red has the longest wavelength and violet has the shortest wavelength. When all the waves are seen together, they make white light. When white light shines through a prism, the white light is broken apart into the colors of the visible light spectrum. Water vapor in the atmosphere can also break apart wavelengths creating a rainbow.
At maturity, the typical Blackeyed Susan (Hirta) will reach up to 1 foot high, with a maximum height at 20 years of 0 inches. The Blackeyed Susan (Hirta) is easily found in nurseries, garden stores and other plant dealers and distributors.
At age 30, the average height for black men is about 69 inches while for white men it is 70 inches. At age 40 they are both about 69 and a half inches. At age 50, average black men about 69 and average white men about 70 inches. At age 60, black men 68 and a half inches and white men 69 inches.