Labarin rayuwar Ibn Sahl, malamin larabawa wanda ya gano karkatar da haske

Shi musulmi masanin lissafi ne kuma masanin kimiyyar lissafi, likita kuma injiniya a fannin gani. Yana da bincike da ka'idoji da yawa akan siffofi na geometric. . An ƙirƙira da gano ka'idar farko ta refraction, kuma an yi amfani da dokar don fitar da sifofi na ruwan tabarau waɗanda ke mayar da hankali ga haske ba tare da ɓarna ba, wanda aka sani da ruwan tabarau na refractive, waɗanda ba su da siffar madauwari.

Shi ne Ibn Sahel, sunansa Abu Saad Al-Ala Ibn Sahel, ya rayu daga shekara ta 940 zuwa 1000 Miladiyya, shi malamin addinin Musulunci ne wanda tushensa Farisa ne, wanda ya yi aiki a fadar Abbasiyawa a Bagadaza.

An amfana da ilimin Ibn Sahl, babban masanin kimiyar da daukakarsa ta shiga sararin samaniya, kuma shi ne Ibn al-Haytham wanda ya rayu daga shekara ta 965 zuwa 1040 Miladiyya, ana iya cewa in ba Ibn Sahl ba, da Ibn al-Haytham bai yi yawa ba. muhimman abubuwan da aka gano a cikin ilimin haske da na gani.Hakika sun share fagen bullowar Ibn al-Haytham.

Dokar Snell ta riga ta wuce

Idan wani ya nuna a yau cewa wanda ya gano ka'idar refraction haske da aka fi sani da "Snell's law" shi ne masanin kimiyya dan kasar Holland Willbrord Snelius wanda ya rayu daga 1580 zuwa 1626 AD, hakika Ibn Sahel shine farkon wanda ya ja hankali ga lamarin. refraction da lankwasa haske a lokacin da yake tafiya daga wannan saman zuwa wancan, kamar ƙetare Daga injin zuwa gilashi ko ruwa.

Larabawa sun kasance suna sha'awar ilimin kimiyyar gani saboda girman alakarsa da ilmin taurari wajen kera na'urorin hangen nesa don bin motsin jikinsu da kuma lura da kurbar sararin sama.Ka'idar Aristotle na ganin abubuwa da ido tsirara.

Littafi a cikin ruwan tabarau

Ibn Sahel yana da littafin da ya fi shahara a yammacin duniya, kuma sunansa shi ne "Littafin Kona Madubai da Lenses" wanda a cikinsa ya yi magana a kan abubuwan da suka shafi ruwan tabarau iri-iri tun daga oval har zuwa mazugi, sannan kuma ya tabo lankwasa kamar yadda suke. suna da alaƙa ta kut-da-kut da na'urorin gani da kuma geometries na astronomy.

Gudunmawar da Ibn Sahel ya bayar, walau wajen gano karkatar da haske ko aikace-aikacen da ya yi a cikin wannan mahallin, daga zayyana ruwan tabarau masu mayar da hankali ga haske da kuma samun ƙarin nau'ikan ruwan tabarau, duk wannan yana bayyana wani tunani mai ƙarfi wanda ya iya haɗa nau'ikan nau'ikan. ilimin da ya samu daga mathematics, physics and engineering.

Kona jiki daga nesa

Daya daga cikin gwaje-gwaje masu ban mamaki da Ibn Sahel ya yi shi ne sanin yadda ake kona abu daga nesa kuma ya tantance yadda za a iya yin hakan ta hanyar amfani da lens da duba lissafin da ke da alaka da wannan batu, batun da ba shi da sabon salo a kansa. Girikawa sun san shi.

Amma ya kara a cikinsa kuma ya zurfafa shi ta hanyar kimiyya, ya kuma bayyana mana yadda ruwan tabarau ke karkata zuwa ga rana ta yadda za a tattara hasken da ke konewa a wani wuri na musamman, wanda shi ne abin da ya fi mayar da hankali kan ruwan tabarau da ke wajensa a wani lokaci. nisan da za a iya ƙididdige su ta hanyar sanin diamita na ruwan tabarau da wasu abubuwa a cikin na'urar gani.

A cikin littafinsa "Littafi akan Ƙona Madubai da Lenses," ya tattauna wannan dalla-dalla. Gabaɗaya, ilimomin da mutumin ya ɗago, wani lamari ne da ya ba masana tarihi mamaki, kuma wasu daga cikin abubuwan da ya kirkira ana ɗaukarsu dabarun fasaha ne.