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MotionMountain
Motion Mountain is a free physics textbook that presents topics through illustrated explanations.
About MotionMountain
MotionMountain offers a free physics textbook in five PDF volumes, based on its 2021 edition. The book presents physics topics through illustrations, anecdotes, puzzles, photographs and films. The volumes cover mechanics, gravity and heat; relativity and cosmology; electricity, optics, the brain and language; quantum physics; and biophysics and nuclear physics.
The homepage says the book is written for pupils, students, teachers and general readers, and that it is aimed at readers between 16 and 106 years old. It also lists experiments to repeat and a section on unsolved problems in physics. Prizes are offered for solving some challenges and for helping to improve the text. The homepage lists Kindle and paper editions and translations, but it does not state prices for these.
Key features
- Five free PDF volumes of a physics textbook, based on the 2021 edition
- Illustrated explanations, anecdotes, puzzles and photographs throughout the text
- Experiments that readers can repeat, described in the book
- Volumes covering mechanics, relativity, electricity, optics, quantum physics and nuclear physics
- Fascinating videos linked from the website
- Prizes offered for solving listed challenges and for improving the text
Best for: Curious adults, students and teachers who want a free, illustrated introduction to physics that they can read at their own pace.
Good for
- The PDF volumes are listed as free to download.
- The text uses illustrations, films and everyday examples to explain physics topics.
Watch out for
- Each PDF volume is large, ranging from 38 MB to 260 MB.
- Pricing for the Kindle and paper editions is not stated on the homepage.
MotionMountain at a glance
- Category
- Education & Learning › Science Learning
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Good for
- Students
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
MotionMountain alternatives
Tools and sites you could use instead, ranked by how closely they match.
The Physics Classroom provides physics lessons for students and teachers, along with class resources and sign-in access.
Atom Animation explores atomic structure through interactive 3D element visualizations.
Physics Animations offers audiovisual material introducing physics concepts, including structures and uses.
ChemTube3D teaches chemistry through interactive 3D animations of molecular structures and reactions.
Chemguide explains chemistry concepts for students in upper-level courses.
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MotionMountain FAQ
What topics does the textbook cover?
The five volumes cover mechanics, gravity and heat; relativity and cosmology; electricity, optics, the brain, language and truth; quantum physics; and biophysics and nuclear physics.
How large are the free downloads?
The homepage lists volume I at 260 MB, volume II at 50 MB, volume III at 80 MB, volume IV at 38 MB and volume V at 85 MB.
Who does the homepage say the book is for?
The homepage says it is written for pupils, students, teachers and anyone curious about nature, and that readers between 16 and 106 years old will enjoy it.
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