Imperial China St 7.3

1
Imperial ChinaSt 7.3

• Unit 4 Chapter 18
• Chinese Discoveries Inventions

2
18.2 Exploration Travel

• Compass
• 3rd Century BCE
• Early ones made of lodestone
• Magnetic Mineral Rock
• points N/S when floating
• Lodestone needles replaced w/ steel needles

3
18.2 Exploration Travel

• Canal Lock
• 10th Century Song Dyn.
• Allow boats to reach H2O _at_ higher level
• Raise up to 100 ft. above sea level
• Paddlewheel Boat
• Segmental Arch Bridge (worlds 1st)?

4
18.3 Industry

• Moveable Type
• Separate Block each character
• Clay Characters baked then set in iron frame
• Paper
• 2nd Century
• Mulberry Tree Bark
• Rags

5
18.3 Industry

• Porcelain
• 1st Century CE (?) origin
• 10th cent. Mass produced in China
• Mix Clay w/ quartz feldspar fire in kiln

6
18.3 Industry

• Steel
• 1st made before 200 BCE
• Early from cast iron
• Air in molten iron steel
• 5th cent. Mix cast w/ wrought steel

7
18.4 Military Technology

• Gunpowder
• powerful weapons during Song Mongol rule
• Alchemists looking for way to extend life find
  saltpeter (salty, white mineral) makes explosive
  powder
• 850 CE formula recorded (Tang)?
• 10th Cent. 1st weapon using it Flamethrower
• Gunpowder mixed w/ oil

8
18.4 Military Technology
9
18.4 Military Technology

• Rocket
• During Song
• black powder saltpeter, charcoal, sulfur
• Early only for fireworks
• 2-staged propel drop arrows on enemies
• Catapult, Grenades larger bombs

10
18.5 Everyday Objects

• Playing Cards 9th cent

• Paper Money Late 8th/ early 9th
• Replaced coins
• Printed w/ wood blockslots of colors

11
18.5 Everyday Objects

• Mechanical Clock
• Wheel makes one revolution every 24 hours
• Moved by dripping H2O
• Drums beat every ¼ hour bell chimes each hour
  to tell people the time
• 1092 (Song) improved more accurate

12
18.6 Disease Prevention

• Smallpox Inoculations
• Approx 10th Century
• Powder from scab of infected person blown into
  others noses
• Poisonous smoke disinfectant
• Steam clothes of sick people