European Physical Society
The EPS is an umbrella organisation of many national physical societies, foremost the DPG. Its purpose is to promote physics and physicists in Europe.
ChemgaPedia: Physikalische Chemie
This site offers large amount of tutorials about many scientific topics. The tutorials about physical chemistry are very useful to learn about the scientific basics which are necessary to understand colloidal physics. Only in German.
Low Index Surfaces of Common Crystal Structures
This site is part of a tutorial for an analytical chemistry course by the Michigan State university. It contains 3D renderings of the surface of many crystal structures with Miller Index ≤ 2. SC, FCC, BCC, Diamond, Graphite, CsCl, NaCl and cubic-ZnS (zincblende) crystal structures are diplayed.
Wacker Art Einheiten und Naturkonstanten
A list of all important natural constants, physical quantities and scales. It is presented in a visually pleasing way with many artsy pictures. The same site also contains an introduction to several physical concepts presented in the same way. In German.
Lichtmikroskopie-Kompendium der Universität Wien
A elaborate compendium about all things light microscopy. It is a great introduction to the fundamentals and applications of light microscopy including advanced techniques. Only in German.
Extensive page about nano of all kinds. This website is a huge collection of news, databases, companies and job postings in nanotechnology.
Bacteria motility and behavior
This is the research website of Howard Berg of Harvard University. He presents several interesting microscopy videos of fluorescent bacteria. They show the behavior and motility of different bacteria species in different conditions.