Different shapes of the nuclei on the grid.

Links
- https://www.physik-astro.uni-bonn.de/en/news/internationales-forschungsteam-knackt-physik-nuss/meissner-pub5.png/image_view_fullscreen
- https://www.physik-astro.uni-bonn.de/en/news/internationales-forschungsteam-knackt-physik-nuss/meissner-pub5.png/@@download/image/Meissner-Pub5.png