... not absorb all wavelengths of light equally, it is believed that either faulty experimental technique or human error may have influenced the results obtained. Introduction Photosynthetic pigments enable plants to absorb light, a process which is essential for production of energy through photosynthesis. Without this process, life as we know it would not exist. At certain wavelengths of light, pigments absorb photons while at other wavelengths photons are reflected. As a result, the pigments appear coloured with the colour of the pigment relating to which photons are reflected in which colour portion of the spectrum (Knox, 2005). The pigments' pattern of absorption, called its absorption spectrum, is a distinguishing feature of each pigment and one that we aimed to demonstrate in this experiment. The hypothesis formed was that the absorbance of light by chlorophyll a would not be equal to the absorbance by chlorophyll b at a wavelength of 480nm. Consequently, the ...

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