The short version
A free engineering thermodynamics textbook with a downloadable PDF.
From the HackerLinks archive
Free textbook on engineering thermodynamics
A free engineering thermodynamics textbook with a downloadable PDF.
At a glance:
First seen:2026-04-26
Last seen:2026-04-26
Times seen:1
Website:thermodynamicsbook.com
Why it caught our attention
Readers engaged with the book itself and its self-publishing economics.
Where it surfaced on Hacker News
2026-04-26
Editorial paraphrase
The author joined the thread, and commenters discussed the 40 MB PDF, Lulu costs, and whether the book’s price point made sense.
Original threadShow HN: Free textbook on engineering thermodynamics