Tekniska Museet
100 Innovations - Tekniska museet

An exhibition at the National Museum of Science and Technology in Stockholm, 2012 – 2018

The spectacles


Ingress för att beskriva innovationen

The spectacles

Spectacles appear to be an innovation that is not technically advanced, yet for many people they are essential. Photo: Anna Gerdén.

The spectacles

Part of Eva Gradin's spectacle collection that was donated to National Museum of Science and Technology in 2011. Photo: Ellinor Algin.

Kort fakta om innovationen

Kort fakta (2) om innovationen

Rubrik för små genier



Twenty five per cent of the population of Sweden needs glasses. The first spectacles were manufactured in the 1280s. When the printing press arrived in the mid-1400s demand increased as more and more people began to read. But people were suspicious of glasses for a long time — those who wore them were regarded as gullible.

In the 1700s spectacles had sidepieces and began to be mass-produced. At that time they were mainly sold by travelling salesmen. Scientific eye tests did not become common until the 1900s.

When you look at something the light must be refracted correctly in the eye so that you can focus but if light is incorrectly refracted things look blurry. Spectacles consist of lenses which are ground to help the eye to refract light on the way to the retina, the optic nerve and the brain.

Rubrik för nördar



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