Wikijunior:How Things Work/Timeline
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The technology of this book spreads over a huge period of time. Here is a timeline to order the inventions.
Prehistory
[edit | edit source]Bronze/Iron Age
[edit | edit source]- 3350 BC - Wheel
- 3000 BC - Ice Skates
- 2400 BC - Pulley
- 2000 BC - Lever
- 700 BC - Flush Toilet
Middle Ages
[edit | edit source]- 1232 - Rocket
Industrial Revolution
[edit | edit source]- 1790 - Sewing machine
- 1801 - Light Bulb
Atomic Age
[edit | edit source]- 1945 - Nuclear Bomb
- 1952 - Laser
Post-Modern Age
[edit | edit source]- 1973 - Mobile Phone