-
Paper making became an important industry in China. For more than 500 years, the Chinese were the only people in
the world who knew the secret of making paper.Industry -
the Chinese eventually replaced the lodestone
with a steel needle.needle. They had learned that rubbing a needle
with lodestone made the needle act in the same way as the
lodestone.Exploration and Travel -
The earliest Chinese steel was made from cast iron.Later they learned that blowing air into molten, or melted, cast iron causes a chemical
reaction that creates steel. Steel is a great deal stronger than iron. Industry -
The new clock was more accurate than earlier timekeeping devices, such as sundials and hourglasses.hourglasses. The
Chinese devised a wheel that made one complete turn every 24 hours. Everyday Objects -
Military Technology discovers by alarmist working with saltpeter looking for the secret to the eternal life
-
Printers used
woodblock printing to make the cards from thick paper.paper. Famous artists drew the designs that appeared on the backs
of the cards. Everyday Objects -
Porcelain is made by combining clay with the minerals quartz and feldspar.However, light can pass through it, so that despite its
sturdiness it looks quite delicate and beautiful. Industry -
By the 10th century, the Chinese had made the first weapon that used gunpowder: the flamethrower.The Chinese used them to spray enemies with a stream of fire. Military Technology
-
Rockets were powered by
a black powder made of saltpeter, charcoal, and sulfur. sulfur. At first, rockets were used only in fireworks. Later, the
Chinese used them as weapons. Military Technology
