As mentioned in the Introduction to these “notes”, I’ll be posting the notes at my website. Here, at this blog (because of limitations on including formulae and graphs in Google’s BlogSpot), I’ll be posting only abstracts of the notes. As I also mentioned, if readers desire to comment on any of these notes, the comments should be posted at this blog, since I don’t have a “comment section” at my website. What follows is an abstract of some notes on thermodynamic entropy that I’ve now posted at my website.
A brief review is given of classical thermodynamics, emphasizing some unsatisfactory statements about and interpretations of thermodynamic entropy made by Clausius, who (perhaps unfortunately) coined the word ‘entropy’ and described some of its characteristics. In particular and in conflict with Clausius’s claim, it’s not at all clear that either the entropy of the world or the entropy of the universe is increasing – or even if they can be defined.