Coba jelasin Réferènsi dari Lènsa dalam bahasa jawa dong

Article on Ancient Egyptian lenses

Lighthouse Getaway: Fresnel lens (contains photographs.)

Random Destructive Acts via Focused Solar Radiation.

TruckView Fresnel lens combats the HGV Blind-Spot.

How the Fresnel lens works.

A computer analysis of the Fresnel lens cross section depicted in the 'graphic examples' section of this very Wikipedia article.