id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
hindsight-4032	Editors, Hindsight	Vol 27, No 1 (1996)	1996	8	.pdf	application/pdf	3285	166	62	On pp. 9-10, Dr. Helga Beez, Curator of the Museum of Optics, Jena, Germany, authors • A Few Words About Spectacles, • an historical description of spectacle design and use as represented in the permanent exhibitions at the museum. Glass, a common material for spectacle lenses, was made as far back as 3300 B. C.-as glass beads and ornaments have been found in the tombs of the pharaohs of the fifth and sixth century dynasties.	cache/hindsight-4032.pdf	txt/hindsight-4032.txt