Antique Spectacles & Other Vision Aids

Ξ January 9th, 2006 | → 0 Comments | ∇ Misc |



A Veritable Spectacle Spectacular!

"Rose-colored glasses are never made in bifocals.
Nobody wants to read the small print in dreams."


~ Ann Landers ~



(A pair of solid gold octoganal lensed glasses from 1850)



"We generally take for granted one of the world's most important inventions - spectacles. Imagine what life would be like not being able to see images clearly or sharply. According to a January 11, 1999 feature article in Newsweek Magazine , reading glasses are one of the most important inventions of the past 2000 years. They developed because of the work of artisans, like glassmakers, jewelers and clockmakers, along with some of the most brilliant scientific minds over the centuries. According to Dr. J. William Rosenthal, "Philosophers, monks, mathematicians, physicists, microscopists, astronomers, and chemists all played vital roles in developing this instrument."

No one really knows about the early history of image magnification. In ancient times, someone noticed that convex-shaped glass magnified images. Sometime between the year 1000 and 1250 crude technology began to develop regarding reading stones (simple magnifiers). English Franciscan Friar Roger Bacon (1220 -1292), in his 1268 `Opus Majus', noted that letters could be seen better and larger when viewed through less than half a sphere of glass. Bacon's experiments confirmed the principle of the convex (converging) lens, described by Alhazen (965-1038) Arabian mathematician, optician and astronomer at Cairo, and even earlier by the Greeks. Bacon recognized that this could assist weak eyes or the vision of aged persons.

Early recorded evidence demonstrates that glasses first appeared in Pisa, Italy about the year 1286. Technically, they were formed from two primitive convex shaped glass/crystal stones. Each was surrounded by a frame and given a handle. These were then connected together through the ends of their handles by a rivet. They were not really an invention per se but instead a bright idea or "adaptation" of something used earlier - the simple glass stone magnifier. Essentially someone took two existing mounted stones and connected them with a rivet. Most likely, this first pair of glasses were invented by a lay person who wanted to keep the process a secret in order to make a profit. This individual was a true visionary (no pun intended). Two monks from the St. Catherine's Monastery, Giordano da Rivalto and Alessandro della Spina, provide the earliest (primary source) documentation to support this fact. On Feb.23, 1306, Giordano mentioned them by stating in a sermon "it is not yet twenty years since there was found the art of making eyeglasses which make for good vision, one of the best arts and most necessary that the world has." He coined the word "occhiali" (eyeglasses) and its use began to spread throughout Italy and Europe. Friar Spina's 1313 obituary notice mentions, "when somebody else was the first to invent eyeglasses and was unwilling to communicate the invention to others, all by himself he made them and good-naturedly shared them with everybody."

history continued...

Spectacles on Wikipedia

 

Leave a reply

You must be logged in to post a comment.

About

    Place for about text

    The Fog theme is built with PS, my glass paintings, custom brushes and patterns by milo IIIIVII.

    Open right sidebar.php in the theme folder to edit this message.
    Check my other themes too.

     

FlickR

    Solitude
    Solitude
    Solitude
    Solitude