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Table 1 Description of the first level of the classification scheme

From: Explore with caution: mapping the evolution of scientific interest in physics

Id Description
0 General Physics
1 The Physics of Elementary Particles and Fields
2 Nuclear Physics
3 Atomic and Molecular Physics
4 Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics
5 Physics of Gases, Plasmas, and Electric Discharges
6 Condensed Matter: Structural, Mechanical and Thermal Properties
7 Condensed Matter: Electronic Structure, Electrical,Magnetic, and Optical Properties
8 Interdisciplinary Physics and Related Areas of Science and Technology
9 Geophysics, Astronomy, and Astrophysics