6.7
2048x1152
10945
atom, molecule, element
6.5
2048x1152
14433
atom, rings, stones
6.5
2048x1152
18061
atom, molecule, chemistry
5.8
2048x1152
12040
atom, sphere, lines
5.8
2048x1152
27851
nucleus, atom, red
4.3
2048x1152
23931
chlorofluorocarbons, dichlor, molecule
4.0
2048x1152
4877
building, windows, architecture
