-
200
Industry: Steel
Steel is made from iorn, but it is less brittle than iorn and easier to bend in different shapes. -
Period: 200 to Feb 11, 1400
CE
-
500
industry: paper
Paper is made from hemp and then the bark of the mulberry tree. -
Feb 19, 800
everyday objects: mechanical clock
The Chinese devised a wheel that made one complete turn every 24 hours. Dripping water made the wheel turn. -
Feb 11, 850
Milatary: Gun Powder
A chemical made by accident when a person tried to make a potion that would make people immortal. -
Feb 18, 850
everyday objects: game cards
Printers used
woodblock printing to make the cards from thick paper. Famous artists drew the designs that appeared on the backs
of the cards. -
Feb 19, 900
everyday objects: paper money
Before that time, coins were the only form of currency. Like game cards, paper money was printed with wood blocks. -
Feb 12, 950
Milatary:Flamethrower
Early flqamethrowers contained gun powder mixed with oil. The chinese used them to spray enemies with a stream of fire. -
Feb 13, 1050
Milatary: small bombs and grenades
The chinese use them to confuse their enemies and terrify their horses. -
Feb 17, 1400
Industry: porelain
Porcelain is made by combining clay with the minerals quartz and feldspar. The mixture is baked in a kiln, or pottery oven, at very high temperatures.
