Atoms Physics 1,004 Electronic resources (E-books) 979 Physical chemistry 218 Nuclear physics 156 Lasers 153 Photonics 152 more ... Quantum physics 128 Heavy ions 119 Condensed matter 116 Mathematical physics 91 Spectroscopy 89 Microscopy 82 Astrophysics 79 Plasma (Ionized gases) 71 Solid state physics 68 Chemistry, Physical and theoretical 63 Optics 63 Electrodynamics 55 Materials science 55 Quantum field theory 51 Elementary particles (Physics) 50 Thin films 50 Astronomy—Observations 49 Biophysics 49 Observations, Astronomical 49 Biological physics 48 Materials—Surfaces 46 Crystallography 44 Quantum computers 39 less ...