COEFFICIENT OF ABSORPTION
\kˌə͡ʊɪfˈɪʃənt ɒv ɐbsˈɔːpʃən], \kˌəʊɪfˈɪʃənt ɒv ɐbsˈɔːpʃən], \k_ˌəʊ_ɪ_f_ˈɪ_ʃ_ə_n_t ɒ_v ɐ_b_s_ˈɔː_p_ʃ_ə_n]\
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a measure of the rate of decrease in the intensity of electromagnetic radiation (as light) as it passes through a given substance; the fraction of incident radiant energy absorbed per unit mass or thickness of an absorber; "absorptance equals 1 minus transmittance"
By Princeton University
Word of the day
dust storm
- a windstorm that lifts up clouds of dust or sand a windstorm that lifts up clouds dust or sand; "it was the kind of duster not experienced in years"