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Subclass QC
| QC1-999 | Physics | |||
| QC1-75 | General | |||
| QC81-114 | Weights and measures | |||
| QC120-168.85 | Descriptive and experimental mechanics | |||
| QC170-197 | Atomic physics. Constitution and properties of matter Including molecular physics, relativity, quantum theory, and solid state physics | |||
| QC221-246 | Acoustics. Sound | |||
| QC251-338.5 | Heat | |||
| QC310.15-319 | Thermodynamics | |||
| QC350-467 | Optics. Light | |||
| QC450-467 | Spectroscopy | |||
| QC474-496.9 | Radiation physics (General) | |||
| QC501-766 | Electricity and magnetism | |||
| QC501-(721) | Electricity | |||
| QC669-675.8 | Electromagnetic theory | |||
| QC676-678.6 | Radio waves (Theory) | |||
| QC701-715.4 | Electric discharge | |||
| QC717.6-718.8 | Plasma physics. Ionized gases | |||
| QC750-766 | Magnetism | |||
| QC770-798 | Nuclear and particle physics. Atomic energy. Radioactivity | |||
| QC793-793.5 | Elementary particle physics | |||
| QC794.95-798 | Radioactivity and radioactive substances | |||
| QC801-809 | Geophysics. Cosmic physics | |||
| QC811-849 | Geomagnetism | |||
| QC851-999 | Meteorology. Climatology Including the earth's atmosphere | |||
| QC974.5-976 | Meteorological optics | |||
| QC980-999 | Climatology and weather | |||
| QC994.95-999 | Weather forecasting | |||
