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 official language of Greece is Greek, which is spoken by 99 percent of the population. The Greek language has its basis in classical Greek and the language of the 21st century is quite similar to that which was spoken during the 5th century B.C. Athens has a population of 3,096,775 and is a bustling urban center.