The development of glassworks, an important step for making sulfa drugs and for chemistry as a whole, turns out to have a surprising benefit for Suika.
the light passing through it narrows,
bringing it into focus.
.يضيق الضّوء المارّ منه ويركّزه
wird das Bild schärfer, so die Logik.
ce qui améliore un peu la netteté.
consentendo di ridurre un po' lo sfocamento, 
una conseguenza logica.
pode fixar melhor onde fica o foco.