The textbook seems nice and clear. The only nitpick i have is that it should talk more about equations of state. I understand that it may not be the focus of the text, but mentioning the current state of equations of state (SAFTs, cubics, multiparameter) would help guide readers looking on how to generate their own steam tables for their fluid of interest, even if the advice is just "go use CoolProp"
On the other hand, i really like the ilustrations on turbomachinery, helps ground the theoretical content.
I imagine printing will be about 2 to 5€, if it's not ultra cheap print on demand refuse. Is the rest all for publishers and Amazon dot com?
Sadly I haven't been very satisfied with print on demand books. It can be serviceable for textbooks, it does make prints a lot more accessible, but the quality has been pretty disappointing for me. When I buy a POD I often end up reading the PDF instead, which seems a bit wasteful.
Thanks for that, it’s very informative. I contemplated publishing a book that way and never actually got that far into the planning phase. Do you think things have changed much since then?
- tablets are everywhere in the classrooms now, so the number of places where a good PDF can do good is much bigger
- there are better workflows to get a high-quality PDF than LaTeX, so much frustration can be saved, and all that can be learned easily with AI tools
- in a sea of AI slop, all the humans are desperate for a One Good Resource they can trust
Go for it!!!!
The reason resellers exist is they do the marketing, warehousing, shipping, customer service, etc.
Because of the different prices on different locales in different currencies the actual share I receive averages 7€ (gross revenue before income tax, although in my case the yearly income is too small to trigger it where I live).
For books sold directly on Lulu List price 43 Print cost 11 Lulu share of profit: 6.5 Rest to author: 25.5
The mindset should not be "this is all that’s left for me", however: a book is many things at once and for better or for worse, Amazon creates a big part of it. Kevin kelly has some excellent advice at https://kk.org/thetechnium/everything-i-know-about-self-publ...
So it's fairly narrow focus, but that is not necessarily a bad thing.
Somewhat a death of 1000 cuts.
I used https://www.xpdfreader.com/pdfimages-man.html to extract them and take a look.
For example, there's a 1 megabyte image of a tanker trailer that is displayed at about 1.5 x 3 inches, you could get rid of 3/4 of those pixels (going from ~400 ppi to ~200 ppi) and not really change the quality of the image for a casual reader.
I did chemical engineering long ago (how long? Computerized process control was just being introduced into the curriculum, and we learned to program in Fortran). I did several calculus courses, but it was always just a matter of memorizing techniques.
Much later, I came across Calculus Made Easy on Project Gutenberg, a textbook from 1914 that actually helped me to understand why calculus works, instead of just treating it like magic.