In physics, intensity is the power transferred per unit area, where the area is an imagined surface that is perpendicular to the direction of propagation of the energy. In the SI system, it has units watts per square metre (W/m 2).
The Ancient Greeks spoke Ancient Greek with three different major dialects: Aeolic, Doric and Ionic. They were the first Europeans to both read and write with an alphabet. This alphabet eventually led to the development of all modern European languages.
Ancient Greece is a large area in the north-east of the Mediterranean, where people spoke Greek. It was much bigger than the Greece we know today. It was the civilization of Greece from the Archaic, period of the 8th/6th centuries BC to 146 BC. The period ended with the Roman conquest of Greece in the Battle of Corinth.