- 22148 1680x1050 atom, chemistry, molecule
- 8301 1680x1050 atom, molecule, element
- 11143 1680x1050 atom, rings, stones
- 13858 1680x1050 atom, molecule, chemistry
- 9362 1680x1050 atom, sphere, lines
- 24383 1680x1050 nucleus, atom, red
- 20414 1680x1050 chlorofluorocarbons, dichlor, molecule
- 2044 1680x1050 building, windows, architecture