Tag Archives: lenses

The View From Where You Sit: Personal Magnification Devices

Microscope: 3 convex lenses in the inner cylinder, fitting into shagreen (snakeskin)- covered tube, with gilt-bronze finial cap and tripod stand, optics by Passemant, ingénieur du roi, France, c. 1750 photo: metmuseum.org

by Melody Amsel-Arieli   Simple magnification devices, like water-filled spheres and rock crystal (quartz) “burning glasses” were known around the Mediterranean and across the Middle East in ancient times. These evidently served not only to light kindling but also to cauterize wounds and enlarge texts. According to Roman naturalist Pliny the Elder, Nero viewed gladiator […]

Guess What – July 2014

Guess What - July 2014

Guess What – July 2014 Round and Round We Go! by Bob Cahn – “The Primitive Man” To the cognoscenti (high eschelon collectors), this month’s GUESS WHAT may be familiarly recognizable but in these days of limited collector concentration — not many fall into this category. So we’re going to presume that mystery and intrigue […]