Friday 8 February 2008 7 surprisingly early inventions

Another submission today from my dad :)

  1. Adding machine - AD1642 : Blaise Pascal (France)
  2. Concrete - 1st century AD : (Rome)
  3. Encyclopedia - c.47 BC : Marcus Terentius Varro (Rome)
  4. Lock - c.4000BC : (Mesopotamia)
  5. Gun - 245 BC : Ctesibus (Greece)
  6. Parachute - c. 2nd century. BC : (China)
  7. Saw - c.4000 BC : (Egypt)

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