MAGNIFYING GLASS INVENTION
In 1260, Marco Bros. once described Chinese old people reading glasses as they read characters.
Large oval shape, crystal stone, quartz, topaz, amethyst milled into a lens, and set in the turtle shell for the frame, a temple with a copper pin stuck on the horns, two string tied to the ear, three The temple is fixed on the hat.
Cost is not expensive, the status of the status of the symbol, there was a homesick with a horse for a pair of glasses.
Alessandro di Spina in Dosgani, Italy.
The highly transparent lenses made in Venice and Nuremberg have been famous in Europe.
It's just a magnifying glass. It's only when you read it.
British scholar Roger Bacon.
In fact, it seems that no one knows who invented and manufactured the first glasses in the world. There are many claims about the invention of eyeglasses.
Humans may have discovered as early as millennia ago that "lenses" made of clear crystals or gemstones have the function of enlarging images; but it is true that the lenses are embedded in the frames into "spectacles", which were said to be in the late 13th century. It also appeared in China and Europe. Some people say that it was invented by an unknown craftsman in China; some people say that it was medieval Alexander Alexander of Dos Gani. Alessandro di Spina; some people also said that it was a 13th century British scholar - Roger. Invented by Roger Bacon.
In 1260 AD, Marco Polo described the sight of the Chinese elderly wearing glasses and reading the small print. It is said that the ancient Chinese glasses were of large oval shape. The lenses were made of crystal stone, quartz, topaz, or amethyst. They were set in the frame made by the turtle shell, and they were stuck on the horns with a pair of copper temples, or with a string. Attach it to your ear or attach the glasses directly to your hat. And at the time, the cost of spectacles was insignificant and it was therefore used as a symbol of status. It is said that there was a record of a squire for a pair of glasses at the price of a horse.
In Europe, the glasses were invented in Italy at the end of the thirteenth century. At that time, Venice and Nuremberg were famous for producing highly transparent lenses in Europe. However, glasses at the time could only be magnifiers and they were only used when reading.
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