1 jan 1540 ano - Vannoccio Biringuccio

Descrição:

Pirotechnia published post-humously in 1540 one of first technical treatises on metallurgy, describes mining, assaying, casting. Also has info on minerals and semi-minerals; transparency important characteristic, and colour; says glass was invented by alchemists trying to make false gemstones also talks about how Venetian developments in glassmaking make it hard for experts to diff glass gems from real gemstones

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