At small angles of incident light, waviness results in reduced reflectivity because of the steepness of the reflectivity-vs.-incident-angle curve and a locally increased average incident angle.
æt smˈɔːl ˈæŋɡəlz ʌv ˈɪnsɪdənt lˈaɪt, wˈeɪvinəs ɹɪzˈʌlts ɪn ɹᵻdˈuːst ɹᵻflɪktˈɪvᵻɾi bɪkˈʌz ʌvðə stˈiːpnəs ʌvðə ɹᵻflɪktˈɪvᵻɾivˌiːˈɛs.ˈɪnsɪdəntˈæŋɡəl kˈɜːv ænd ɐ lˈoʊkəli ɪŋkɹˈiːst ˈævɹɪdʒ ˈɪnsɪdənt ˈæŋɡəl.