Everything has a timeline

TiMELiNES

c. 500 BCE

Reading stones help magnify text

Simple convex lenses aid readers before framed spectacles become common.

Canonical milestoneEurope1 timeline

Context

Appears In

TimelineTimeline of Lenses and Optics

Position 5

Authority

Sources

Encyclopaedia BritannicaConfidence 96%

Taxonomy

Tags

booksoptics