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 only extant language in this branch is Modern Greek. Greek is one of the oldest Indo-European languages. Mycenaean dates from 1300BC. The Ancient Greek of Homer was written from around 700BC. The major forms were Doric (Sparta), Ionic (Cos), Aeolic (Lesbos), and Attic (Athens). The latter is Classical Greek.