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.
The Greeks speak the Greek language, which forms its own unique branch within the Indo-European family of languages, the Hellenic. They are part of a group of pre-modern ethnicities, described by Anthony D. Smith as an archetypal diaspora people.