Littafin Haske

A shekara ta 1574, Taqi al-Din (1526-1585) ya rubuta babban aikin Larabci na ƙarshe akan ilimin gani, mai suna "Littafin Hasken ɗalibin hangen nesa da hasken gaskiyar abubuwan gani", wanda ya ƙunshi binciken gwaji a cikin juzu'i uku. akan hangen nesa, hasken haske, da jujjuyawar haske.Littafin ya yi bayani ne game da tsarin haske, yaduwarsa da jujjuyawar duniya, da alakar haske da launi.A cikin juzu'i na farko, ya yi magana ne game da "yanayin haske, tushen haske, yanayin yaduwar haske, samuwar gani, da tasirin haske ga ido da gani".A cikin juzu'i na biyu, ya ba da "tabbacin gwaji na ƙayyadaddun tunani na haɗari da haske mai mahimmanci, cikakken tsari na dokokin tunani, da bayanin gini da amfani da kayan aikin jan karfe don auna tunani daga jirgin sama, mai siffar zobe. , Silindrical, da madubai na juzu'i, ko maɗaukaki ko maɗaukaki."Juzu'i na uku "yana nazarin muhimmiyar tambaya game da bambance-bambancen da haske ke fuskanta yayin tafiya a cikin matsakaici masu yawa daban-daban, watau yanayin hasken da aka cire, samuwar refraction, yanayin hotuna da aka samo ta hanyar hasken da aka cire."