Quantum mechanics; Physics 388 Physics 282 Solid state physics; Properties of matter 268 Mathematical physics 208 Atomic and Nuclear physics 183 Electronics engineering; Applied physics 138 Astrophysics; Descriptive astronomy 132 Digital Microcomputers or Microprocessors; Computer science 114 Astronomy & allied sciences 98 Statistical physics; Classical mechanics 94 Reports on progress in physics 92 Plasma physics; Properties of matter 90 Mechanics 87 Nanotechnology 80 Theoretical physics 69 Semiconductors 68 Molecular spectroscopy 60 Light & paraphotic phenomena (Optics); Physics 58 Applied numerical analysis; Applied mathematics 57 Crystallography 54 Theory of relativity; Physics 53 Dr.V.Biju 52 Circuits; Electronics engineering; Applied physics 51 Particles (Nuclear physics) 51 Practical physics 51 Dr.G.Renuka 49 Electronics 49 Meteorology 48 Electrodynamics; Physics 47 Physical review B 47