Sa uusipon, an termodinamika iyo nahaman gikan sa kagustohan na mapalangkaw an katibayan kan mga enot na makinang tubig-sangaw, partikular sa kagibohan kan Pranses na pisisistapisiko na si [[Nicolas Léonard Sadi Carnot]] (1824) na iyo nagtutubod na an katibatayan kan makina an susi na makakatabang sa [[Pransya]] para manggana sa [[Gerang Napolyoniko]].<ref>{{cite book|title=On the Motive Power of Heat, and on the Laws which can be deduced from it for the Theory of Heat|last=Clausius|first=Rudolf|publisher=Poggendorff's Annalen der Physik, LXXIX (Dover Reprint)|year=1850|isbn=978-0-486-59065-3}}</ref> An Scots-Irish na pisisistapisiko na si [[William Thomson, 1st Baron Kelvin|Lord Kelvin]] an enot na makahimo nin konsisong depinisyon kan termodinamika kan 1854<ref name="kelvin1854">{{cite book|url=https://books.google.com/books?id=nWMSAAAAIAAJ&q=On+an+Absolute+Thermometric+Scale+Founded+on+Carnot%E2%80%99s+Theory&pg=PA100|title=Mathematical and Physical Papers|author=William Thomson, LL.D. D.C.L., F.R.S.|publisher=C.J. Clay, M.A. & Son, Cambridge University Press|year=1882|volume=1|location=London, Cambridge|page=232}}</ref> na iyo (sa [[Ingles]]), "''Thermo-dynamics is the subject of the relation of heat to forces acting between contiguous parts of bodies, and the relation of heat to electrical agency''."
