Video narration
Phone camera mein roshni tasveer kaise banati hai aur aankh mein kaise? Roshni cornea se aati hai; cornea aur lens, camera ki tarah, ise retina par focus karte hain. Retina roshni ko tantrika-sanketon mein badalti hai. Optic nerve ye sanket mastishk tak pahunchati hai. Yahin mod hai: dekhna keval aankh ka kaam nahi. Mastishk inhen samajhkar chitr banata hai. Jawaab: aankh retina mein roshni ko sanketon mein badalti hai, mastishk unhen samajhta hai - computer se juda jeevit camera.