Researched
Eyeglasses
Ground glass lenses worn in frames appear in northern Italy around 1286 and begin the craft of lens making.
Open in the interactive tree →Spectacles for reading were first made in Italy in the late 13th century and spread through Europe within decades. The spectacle makers' skill in grinding lenses led to the telescope and the microscope.
Prerequisites
Unlocks
- The telescope1608The telescope was invented by Dutch spectacle makers using ground lenses