Monday, July 8, 2019

Porcelain — An Industrial Espionage Story

1712 A.D. ...a French Jesuit priest named François Xavier d’Entrecolles pioneered industrial espionage by recording the secrets of porcelain making while on a trip to China and sending them back to Europe...

Another remarkable use for porcelain is the lithophane, a sheet of porcelain so thin as to be translucent, with artwork etched into it. The lithophane is thin enough that the art can only be seen when backlit, but just thick enough that the image can have depth. Lithophanes began to appear in several parts of Europe in the 1820s, but they’re believed to have originated in China a millennia earlier during the Tang Dynasty. Later Ming Dynasty scholars wrote of Tang bowls “as thin as paper” that included secret images.