empedocles held that all matter is made of four elements earth air fire and water.
empedocles held that all matter is made of four elements earth air fire and water.
held that all matter is made of four elements earth air fire and water?
empedocles
section::::ancient history.









































the persian philosopher zarathustra (600-583 b.c.) -aka zoroaster- described the four elements of earth, water, air and fire as "sacred," i.e., "essential for the survival of all living beings and there- fore should be venerated and kept free from any contamination".









































in western thought, the four elements earth, water, air, and fire as proposed by empedocles frequently occur; aristotle added a fifth element, aether; it has been called akasha in india and quintessence in europe.
classical element
galen's theory of medicine used the idea of the four humours (earth air fire and water) characterised by four qualities (moist, dry, warm, cold), linked as - earth: dry cold; air: moist, warm; fire: dry, warm; water: moist, cold. hasler followed galen in considering temperament (cf temperature) as an important characteristic of both persons and medicines. galen had experimented with mixing boiling water and ice to establish a "neutral" temperature, and posited four degrees of cold and four degrees of warmth on either side of this neutral zero point. this formulation still envisaged warm and cold as distinct, opposed entities. hasler saw that the nine points of galen's model could be united into a single scale from 1 (coldest) to 9 (hottest). a thermometer with a 1-9 scale was described in 1624.
johann hasler