QC 1-75 General physics
QC 81-114 Weights and measures
QC 120-168.85 Experimental Mechanics
QC 170-197 Atomic physics. Constitution & properties of matter (Including molecular physics, relativity, quantum theory, and solid state physics)
QC 221-246 Acoustics. Sound
QC 251-338.5 Heat
QC 310.15-319 Thermodynamics
QC 350-467 Optics. Light
QC 450-467 Spectroscopy
QC 474-496.9 Radiation physics (General)
QC 501-766 Electricity and magnetism
QC 501-(721) Electricity
QC 669-675.8 Electromagnetic theory
QC 676-678.6 Radio waves (Theory)
QC 701-715.4 Electric discharge
QC 717.6-718.8 Plasma physics. Ionized gases
QC 750-766 Magnetism
QC 770-798 Nuclear and particle physics. Atomic energy. Radioactivity
QC 793-793.5 Elementary particle physics
QC 794.95-798 Radioactivity and radioactive substances
QC 801-809 Geophysics. Cosmic physics
QC 811-849 Geomagnetism
QC 851-999 Meteorology and Climatology (Including the earth's atmosphere)
QC 974.5-976 Meteorological optics
QC 980-999 Climatology and weather
QC 994.95-999 Weather forecasting