EVERYDAY SCIENCE

Detailed explanation-1: -Anaximenes is best known for his doctrine that air is the source of all things. In this way, he differed with his predecessors like Thales, who held that water is the source of all things, and Anaximander, who thought that all things came from an unspecified boundless stuff.

Detailed explanation-2: -Anaximenes of Miletus, a successor of Anaximander, perhaps his pupil (about B.C. 528), held air to be the primary principle of all things.

Detailed explanation-3: -Empedocles was a Greek philosopher who is best known for his belief that all matter was composed of four elements: fire, air, water, and earth. Some have considered him the inventor of rhetoric and the founder of the science of medicine in Italy.

Detailed explanation-4: -Anaximenes thought air was the primary substance that held the universe together. He believed that air was infinite and divine. He was the first to use the word pneuma (“breath of life”) as a synonym for air.

Detailed explanation-5: -Heraclitus, also spelled Heracleitus, (born c. 540 bce, Ephesus, Anatolia [now Selçuk, Turkey]-died c. 480), Greek philosopher remembered for his cosmology, in which fire forms the basic material principle of an orderly universe.