40.00.00 ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS
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41.00.00 Electromagnetism; electron and ion optics
(5)
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42.00.00 Optics (for optical properties of gases, see 51.70.+f; for optical properties of bulk materials and thin films, see 78.20.-e; for x-ray optics, see 41.50.+h)
(3)
- 43.00.00 Acoustics (for more detailed headings, see Appendix to section 43)
- 44.00.00 Heat transfer
- 45.00.00 Classical mechanics of discrete systems
- 46.00.00 Continuum mechanics of solids (see also 83.10.Ff in rheology; 91.60.Ba Elasticity, fracture, and flow; 91.45.Ga Dynamics and mechanics of tectonics; 91.55.Ln Kinematics of crustal and mantle deformation in geophysics)
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47.00.00 Fluid dynamics (for fluid dynamics of quantum fluids, see section 67; see also section 83 Rheology; for sound generation by fluid flow, see 43.28.Ra-in Acoustics Appendix)
(1)