Zwei beliebige Wege in einem konservativen Kraftfeld.
The original uploader was <a href="https://en.wikipedia.org/wiki/de:User:Allen_McC." class="extiw" title="w:de:User:Allen McC.">Allen McC.</a> at <a href="https://en.wikipedia.org/wiki/de:" class="extiw" title="w:de:">German Wikipedia</a>.
2006-07-22
Eigene Darstellung.