About First Principles Fieldbook
First Principles Fieldbook is an independent resource covering Engineering ideas, traced from definition to evidence.. We publish clear, practical, well-researched guides — the straight answers, without the marketing spin.
How we work
Our guides are built on current, mainstream understanding of the subject and checked against reliable sources. Where a topic is genuinely unsettled, we say so plainly rather than pretending certainty.
Editorial independence
Recommendations are based on evidence and experience, not on who makes a product. Any sponsored or affiliate content will always be clearly labelled.
Educational explanations are not instructions for work on physical equipment. Follow manufacturer documentation and supervised laboratory or workplace procedures, and route energized systems, mains or building wiring, unknown equipment, stored energy, and hazardous testing to an appropriately qualified person.
Corrections
Spotted something inaccurate or out of date? We would rather fix it than defend it — reach us via the contact page.