Use this email for technical and business questions.
Please note that I do not answer physics questions via email. There is a Discord server for that. However, you can still send me feedback or report any content-related errors.
Responsible for the content:
Cancellation policy of digital productsDigital products include all downloadable files (like eBooks). The digital product is provided immediately after the payment process. By paying for the digital product, the buyer agrees to waive his right of withdrawal and to have the download access provided immediately.
For all content on the website, the following license applies: CC BY-NC 4.0 DEED.
With this license, you are allowed to:
- Share — copy and redistribute the content in any medium or format.
- Adapt — remix, transform, and build upon the material.
- Attribution — you must give appropriate credit, provide a link to the material or to this license.
- Non-Commercial — you may not use the material for commercial purposes.
- No Additional Restrictions — you may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.
If you become aware of any copyright infringement, please notify Alexander accordingly. Upon discovery of any infringements, such content will be promptly removed.