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.
Latin was the language of ancient Rome, however the educated classes also were fluent in Greek as Greek was the international language of the ancient world. For example, if a diplomat had trouble with a certain language, he could always converse in Greek and be understood.