Refrigerant-134a is expanded adiabatically from 100 psia

 Athens o Good land to settle on o Access to water  Port nearby o People in Athens consistently o Thought they came from the earth  Not a lot of farmland o Very organized o Synokism  Unification of Attica  Political unity o 7th century crisis  Too many people in Athens  No colonies yet  Overpopulation  Richer Athenians enslaving the poorer ones o Archons  Rulers  Named the years by who was the archon o Tyranny  First attempt - Kylon o Draco  Wrote the Athenian laws down