THE HWGACOR RTP DIARIES

" An experiment that has a drinking water-stuffed glass sphere was performed and al-Farisi showed the extra refractions due to glass can be overlooked in his design.[74][c] As he noted in his Kitab Tanqih al-Manazir (The Revision of the Optics), al-Farisi made use of a significant apparent vessel of glass in The form of a sphere, which was filled w