• Phototelescope and Photomicroscope

    A plate, coated with silver, invented by the artist Daguerre to take photographs was not very sensitive to light. Therefore, to be photogr...

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  • The Old Bead and the Young "Dough"

    Can queen Hatshepsut 's beads, made three thousand four hundred years ago, be considered the most ancient glass thing? It turns out, n...

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  • Mysteries and Riddles: the French "Mirror" Revolution

    Inspired by their king Louis XIV, the French learned how to make their sheet glass . Unlike the glass that was blown out, sheet glass coul...

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  • Soda, Lime and Sand

    Glass, the initial components of the mixture of which are quartz sand, soda, and lime, is called sodium-calcium . This glass is about 90% ...

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  • Glass in Ancient China: Beauty or Strength?

    Noteworthy is the information that, despite the achievements of local Chinese glass production, in the Tang era (618-907), items, made of ...

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  • Colored Glass

    The manufacture of glass in the old days was based on the use of untreated natural materials — sand, ash, soda, and poor and polluted miner...

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