Water Turbine: the whole path

  1. 1
    Tools & MakingI

    Stone Tools

    The first cutting edge

    3.3 Mya

  2. 2
  3. 3
    Materials & ChemistryII

    Pottery

    Clay turned to stone by fire

    18,000 years ago

    needs 2

  4. 4
    Materials & ChemistryII

    Charcoal

    Wood cooked slowly under earth

    c. 4,500 BCE

    needs 1, 2

  5. 5
    Land TransportII

    Wheel & Axle

    Rolling instead of dragging

    c. 3,500 BCE

    needs 1

  6. 6
    Materials & ChemistryIII

    Bronze

    Copper and tin, harder together

    c. 3,300 BCE

    needs 2, 3, 4

  7. 7
    Materials & ChemistryIII

    Iron Smelting

    Wider adoption around 1200 BCE; ore, charcoal and a bloomery

    c. 1,200 BCE

    needs 4, 6

  8. 8
    Materials & ChemistryIII

    Steel

    Iron with just enough carbon

    c. 1,000 BCE

    needs 4, 7

  9. 9
    MechanicsIII

    Gears

    Teeth that trade speed for force

    c. 300 BCE

    needs 6

  10. 10
    Energy & Prime MoversIII

    Water Wheel

    A river turned into work

    c. 300 BCE

    needs 5, 9

  11. 11
    Electricity & ElectronicsIV

    Battery

    Chemistry that pushes a current

    1800

    needs 6

  12. 12
  13. 13
    Energy & Prime MoversIV

    Water Turbine

    Falling water turned into electricity

    1827

    Goal · needs 8, 10, 12


Type a name, a date, a material, a domain…