Evaluation of scattered-light spectra to apply the estimate of absorption spectra of flowers' petals

We investigate the new method to evaluate the absorption spectrum by using the scattered light spectrum. The measurement set-up is to prevent the direct reflection light. By subtracting the two spectra, we can evaluate the change in the absorption spectra of samples where the transmitted light spectrum can not easily be measured. We apply this method to the derivation of absorption spectrum of flowers' petals, and estimate what kinds of absorption spectra contribute to the color of flowers' petals.