TY - JOUR AU - Martinas, Katalin AU - Brodszky, Ildikó PY - 2000/01/01 Y2 - 2024/03/29 TI - Thermodynamics of Gyula Farkas - a new (old) approach to entropy JF - Periodica Polytechnica Chemical Engineering JA - Period. Polytech. Chem. Eng. VL - 44 IS - 1 SE - DO - N/A UR - https://pp.bme.hu/ch/article/view/286 SP - 17-27 AB - Caratheodory´s postulate system is regarded as a milestone in the history offoundation of thermodynamics and as one of the most elegant constructions.Entropy is introduced via the adiabatic inaccessibility postulate. The mainstatement is the existence of an integrating factor for the heat element ofthe first law independently of the number of variables.The early history is nearly forgotten. Ideas leading to Caratheodory´sprinciple have developed slowly from the very moment that Clausius provedhis famous integral formula. Gyula Farkas, a Hungarian physicist has alreadyin 1895 formulated a version of the adiabatic inaccessibility postulate. ER -