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 [...]
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 [...]
A bolt of lightning in the sky Lei Kung was the Chinese god of thunder, and his wife, Lei Zi, was the goddess of lightning. He makes thunder with his [...]
