Okay, I apologize if this is in the wrong location, but someone once told me of a book and I figured this was the "best" place to post an inquiry as it covers many fields. Supposedly there exists a book, an older one if I'm not mistaken, that relates the concepts of stress/strain, fluid dynamics, thermodynamics, and electrodynamics as forms of potential functions with different constants. Does anyone happen to know the name of this book? I would dearly love to find a copy, but know not the author, title, or if it even truly exists. Any assistance would be most appreciated. Thanks for taking your time to glance at this post!