Dissemination. The English edition and the translations of the free physics textbook are now downloaded over 40 000 times a year by girls, boys, men and women. Since 2010, the downloads from developing countries are more numerous than those from the developed countries.
Impact. Several young men and women, in developing and in developed countries, were encouraged by the book to study physics at university.
Teaching. The use of the book by teaching professionals is increasing steadily.
Providing a role model.
Each of us has to choose between addiction and passion, that is, between
superficiality and dedication. In everything we do, we need to distinguish
between distraction and concentration. This site has no
distractions and no lies. Readers are encouraged to concentrate on motion
in nature, to enjoy the exploration, to imagine, to think and to
Please support free science education.
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Your donation will be used to improve the free physics textbook, the translations and the distribution (or, if you explicitly mention it, to continue the research project). The book has been constantly improved for more than twenty years. The book 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.
Thank you in advance for your support, also in the name of all readers! If
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