Free science education via the internet works.
Both the English edition and its 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, liked the book so much that they decided to study physics at university.
Please support free science education.
No profit is made with this project: of the sum spent so far, less than a third has been covered by donations. The book has been constantly improved for more than twenty years. Your donation to the charitable non-profit 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. You can use the following button, even without a Paypal account:
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 and its proper use is controlled by the German tax authorities. Contact email@example.com for more information or for obtaining a receipt ("Zuwendungsbescheinigung" or "Spendenbescheinigung"). If you want, you will be added to the liste of sponsors.
For a non-addictive internet.
Everybody has to choose between passion and addiction. And between dedication and superficiality. The ancients would say: one has to chose between virtue and vice. For these reasons, there are no (known) half-truths on this site, no lies, no ads, and no distractions. Enjoy it!
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