The Carnot cycle is a topic that is traditionally present in introductory physics courses dedicated
to the teaching of thermodynamics, playing an essential role in introducing the concept of Entropy
and the consequent formulation of the second Law. Its effective understanding and contribution to
the development of thermodynamics is often hindered, however. Among other things, this is the result
of a pragmatic approach, which usually limits itself to presenting the isotherms and adiabatic
curves in a P-V diagram and is totally disconnected from the historical fundamentals of Heat Theory.
The purpose of this paper is to reveal the potential of an approach to the subject that recovers the
historical and social dimensions of scientific knowledge, and to promote reflections about the
nature of science (NOS).