Posankha mandala, padzakhala 1.56, 1.61, 1.67, 1.74 ndi mfundo zina zomwe mungasankhe, mtengowu umatanthawuza ndondomeko ya refractive ya mandala.Kukwera kwa refractive index ya disolo, lens imakhala yocheperapo komanso yovuta kwambiri.Zachidziwikire, kuchuluka kwa ref ...
Werengani zambiri