THE BEST SIDE OF HWGACOR

" An experiment using a water-filled glass sphere was carried out and al-Farisi confirmed the additional refractions a result of the glass may be ignored in his design.[seventy four][c] As he famous in his Kitab Tanqih al-Manazir (The Revision from the Optics), al-Farisi made use of a considerable very clear vessel of glass in The form of a sphere,