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Medieval stained glass, eyeglasses, and modern glass

By |2018-05-27T00:13:12+00:00September 5th, 2017|Medieval, Modern, Science|

Medieval glass: Islamic glass (probably Iraq, 800s AD, now in the Metropolitan Museum, New York) Medieval glass-making By the 1100s, glass-making was expanding again from West Asia; there were glassworks further east at Kuva in Central Asia (modern Uzbekistan). Glass-making also moved westward: by 1000 AD, Venice was a growing center of glass manufacturing. In West Africa, local [...]

What is a camera obscura? – Chinese Science

By |2018-05-28T22:31:08+00:00June 7th, 2017|China, Science|

What is a camera obscura? This is a large camera obscura: a dark room with an image projected into it. Who invented the camera obscura? The Chinese philosopher and scientist Mozi may have been the first person to write about a camera obscura, about 400 BC - anyway, Mozi's camera is the first [...]

Who was Lei Kung? Ancient Chinese gods

By |2018-04-18T17:29:29+00:00June 7th, 2017|China, Religion|

Lei Kung was the Chinese god of thunder, and his wife, Lei Zi, was the goddess of lightning. He makes thunder with his hammer, like the German god Thor, and Lei Zi makes lightning with her mirrors. Artists drew Lei Kung with a bird's head and wings and claws, and blue skin, and he rode [...]