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Spectacles & Contact Lenses Two pairs of spectacles (lunettes), English, mid 18th-19th century

Spectacles & Contact Lenses Two pairs of spectacles (lunettes), English, mid 18th-19th century
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Largest available format 3504 × 2791 px 2 MB
Dimension [pixels] Dimension in 300dpi [mm] File size [MB] Online Purchase
Large 3504 × 2791 px 297 × 236 mm 1.5 MB
Medium 1024 × 816 px 87 × 69 mm 1.1 MB

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IMAGE number
UIS5063285
Image title
Spectacles & Contact Lenses Two pairs of spectacles (lunettes), English, mid 18th-19th century
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Location
Science Museum, London, UK
Medium
object
Image description

Spectacles & Contact Lenses Two pairs of spectacles (lunettes), English, mid 18th-19th century. One pair (c 1750-1830) has a steel frame while the second pair is made of silver. Spectacles have been in use in the West for at least 700 years. The earliest had convex lenses, and were designed to be worn by people with long sight to help them focus on nearby objects. Later, concave spectacle lenses were made for peole with short sight. In 1784 Benjamin Franklin (1706-1790) invented 'bifocals' - spectacles split into two parts, each with a different focal length. Photographie ©SSPL/Science Museum

Photo credit
SSPL/UIG / Bridgeman Images
Image keywords
18th century / 19th century / Science / optics / physics / glasses / Sight / sense / thing / steel / metal / silver

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