Motion Mountain

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Free science education via the internet works.

The English edition and the French translation by Benoît Clénet of the free physics textbook have been well received by girls, boys, men and women. The book is now downloaded across the world over 40 000 times a year. Since 2010, the downloads from developing countries are more numerous than those from the developed countries.

The use of the book by teaching professionals is increasing steadily. Several young men and women, in developing and in developed countries, were encouraged by the book to study physics at university.

Support free science education!

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The free physics textbook has been constantly improved for more than twenty years. The project will continue as long as possible.

No profit is or has ever been made: of the sum spent so far, less than a quarter has been covered by donations. Your donation to the charitable, non-profit and tax-exempt association, the Motion Mountain Physikverein in Germany, that supports the book, is welcome! Your donation will be used to improve the book, the translations and the distribution – and to continue keeping the site free of advertising. Alternatively, you can request that your donation should be used to continue the research presented in volume VI.

Thank you in advance for your support, also in the name of all readers! If you desire it, your name will be added to the list of sponsors. Your donation is tax-deducible according to German law; its proper use is controlled by the German tax authority. Contact for more information or for obtaining a receipt ("Zuwendungsbescheinigung" or "Spendenbescheinigung").

Against an addictive internet – in favour of passion.

Each of us has to choose between addiction and passion: between superficiality and dedication. Therefore there are no ads and no distractions on this site. And no half-truths. Enjoy the exploration of motion, and the curiosity and passion that drives it.


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