The history of thermodynamics is a fundamental strand in the history of physics, the history of chemistry, and the history of science in general. The development of thermodynamics and heat power pdf both drove and was driven by atomic theory.
The ancients viewed heat as that related to fire. In 3000 BC, the ancient Egyptians viewed heat as related to origin mythologies.
In the Western philosophical tradition, after much debate about the primal element among earlier pre-Socratic philosophers, Empedocles proposed a four-element theory, in which all substances derive from earth, water, air, and fire. The Empedoclean element of fire is perhaps the principal ancestor of later concepts such as phlogin and caloric. Around 500 BC, the Greek philosopher Heraclitus became famous as the “flux and fire” philosopher for his proverbial utterance: “All things are flowing.