Heat Distortion Temperature (softening temperature) The molecular structure of PVC is made of continuous carbon- carbon single bonds in the main chain. As this main chain is highly flexible, PVC products have the disadvantage of having a low heat distortion temperature (softening temperature) compared with other plastics of the similar molecular structure.
This philosophy greatly impacted the Greek civilization. Athens was the intellectual center of Greece. It was one of the first city-states of its time, and is still world renowned as one of the most famous cities in the world. It was named after Athena, the goddess of wisdom and the city's patron.his philosophy greatly impacted the Greek civilization. Athens was the intellectual center of Greece. It was one of the first city-states of its time, and is still world renowned as one of the most famous cities in the world. It was named after Athena, the goddess of wisdom and the city's patron.
Definition. by Joshua J. Mark. Pericles (495â429 BCE, whose name means surrounded by glory) was a prominent statesman, famous orator, and general (in Greek 'Strategosâ) of Athens during the Golden Age of Athens. So profound was his influence that the period in which he led Athens has been called the 'Age of Periclesâ. This statesmanâs influence on Athenian society was so great that Thucydides, his contemporary admirer and historian, called him the first citizen of Athens.