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.
---Winston Churchill. Ancient Greek! The language of Aeschylus, Aesop, Alexander the Great, Archimedes, Aristophanes, Aristotle, Euclid, Euripides, Hippocrates, Homer, Pericles, Plato, Ptolemy, Sophocles, Thales, Thucydides, Xenophon, and lots of other famous characters from our Western heritage. It's also the language of the Greek New Testament.