alt Hacker NewsIn english is much better now... but:
https://de.wikipedia.org/wiki/Fourier-Transformation
That is much more as it used to be in english. Anyway I stated clearly, it was a time ago, and now may be better, that it was just an example. In german is still shooting mathematical symbols that anybody who does not already know what FT is, will 99% not even start to understand what is it about.
The only way anything ever changes in a volunteer project is if someone feels motivated and makes the effort. Please contribute changes to German Wikipedia articles (or English ones) when you notice possible improvements. If you are not personally capable of improving an article about a topic you don't know about, please try to contribute to the articles about topics you do know something about. Or you can try to leave a talk page message asking for help.