User:ArEeba HuMayun/sandbox

An ancient Greek philosopher, thought that all materials are made up of four things called elements: 1. Earth 2. Air 3. Water 4. Fire Plato adopted Empedocles theory and coined the term element to describe these four substances. His successor, Aristotle also adopted the concept of four elements. He introduced the idea that elements can be differentiated on the basis of properties such as hot versus cold and wet versus dry. For example, heating clay in an oven could be though of as driving of water and adding fire, transforming clay into a pot. Similarly water (cold & wet) falls from the sky as rain, when air (hot and wet) cools down. The Greek concept of four elements existed for more than two thousand years.'''