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Ancient China Science and Technology
17
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Ancient China
Science & Technology
January 10, 2019
Technological Contributions
Inventions
- Inventions based on natural resources
- silk, lacquer, paper, etc
- wheelbarrow, kites, horse chest harness, seismoscope, umbrellas, ship rudders
- 4 Major Inventions
- Compass - 4th Century BC
- Gun Powder- 2nd Century
- Paper- 2nd Century
- Moveable type Printing - 11th Century
- Suspension Bridge - discuss next week
Qin & Han Dynasties
- China reunited following warring state period
- Qin Dynasty 221 BC-206 BC
- Han Dynasty 206 BC - 220
- Standardized weights and measures
- Set width of axles for chariots/carts
- Road system (uniform ruts)
Qin & Han
Dynasties
Gun Powder
- Possibly invented by 200 BC
- Saltpeter, Charcoal, Sulfur
- Discovered by alchemists looking for immortality elixir
- Used for fireworks
- Later used for warfare
Gun
Powder
Papermaking
Paper
- Invented 105 using mulberry tree and other plant fibers
- Soaked, pressed, & laid on frame to dry
- Many Uses
- Padding/Wrapping
- Writing
- TP
- Clothing
- Money
Compass
Compass
- Lodestone- a naturally occurring magnet was used as a north-south indicator
- 1st used to orient houses for feng shui
- Later used for navigation
- Refined accuracy by hanging a needle from a silk thread
- https://www.brainpop.com/technology/scienceandindustry/compass/
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