Subject
Physics
Plasma (Ionized gases)
Astrophysics
22
Astronomy
12
Quantum theory
12
Condensed matter
10
Mathematical physics
9
Laser physics
7
Particles (Nuclear physics)
7
Physical optics
7
Nuclear fusion
6
Physical geography
6
Spectrum analysis
6
Surfaces (Physics)
6
Statistical physics
5
Thermodynamics
5
Chemistry, Physical organic
4
Electromagnetism
4
Engineering
4
Gases
4
Quantum computing
4
Weights and measures
4
Electrodynamics
3
Electronics
3
Fluids
3
Molecular structure
3
Biomedical engineering
2
Nuclear physics
2
Particle acceleration
2
Quantum optics
2
Superconductivity
2
Analytical biochemistry
1
Biochemistry
1
Chemical engineering
1
Magnetism
1
Mechanics
1
Nanotechnology
1
Polymers
1
Soft condensed matter
1
Statistics
1