1. Astronomy
1.1. Astrophysics
1.1.1. Cosmology
1.1.2. Gravitation Physics
1.1.3. Planetary Astrophysics
1.1.4. Plasma Physics
1.1.5. Space Physics
1.1.6. Stellar Astrophysics
1.1.7. High Energy Astrophysics
1.1.8. Observational Astrophysics
1.1.8.1. Radio Astronomy
1.1.8.2. Infrared Astronomy
1.1.8.3. Optical Astronomy
1.1.8.4. Ultraviolet, X-ray, and Gamma Ray Astronomy
1.1.9. Theoretical Astrophysics
1.1.9.1. Solar System Formation and Evolution
1.1.9.2. Stellar Dynamics and Evolution
1.1.9.3. Galaxy Formation and Evolution
1.1.9.3.1. Lambda-CDM Model
1.1.9.3.2. Baryonic Matter
1.1.9.3.3. Energy
1.1.9.3.4. Radiation
1.1.9.3.5. Dark Energy
1.1.9.3.6. Quintessence
1.1.9.3.7. Phantom Energy
1.1.9.3.8. Dark Matter
1.1.9.3.9. Cold Dark Matter
1.1.9.3.10. Warm Dark Matter
1.1.9.3.11. Hot Dark Matter
1.1.9.3.12. Dark Radiation
1.1.9.3.13. Shape of the Universe
1.1.9.3.14. Large-Scale Structure
1.1.9.3.15. Reionization
1.1.9.3.16. Structure Formation
1.1.9.3.17. Large Quasar Group
1.1.9.3.18. Galaxy Filament
1.1.9.3.19. Supercluster
1.1.9.3.20. Galaxy Cluster
1.1.9.3.21. Galaxy Group
1.1.9.3.22. Local Group
1.1.9.3.23. Void
1.1.9.4. Magnetohydrodynamics
1.1.9.5. Large-Scale Structure of Matter in the Universe
1.1.9.6. Origin of Cosmic Rays
1.1.9.7. General Relativity and Physical Cosmology
1.1.9.8. String Cosmology
1.1.9.9. Astroparticle Physics
1.2. Astrodynamics
1.3. Astrometry
1.4. Extragalactic Astronomy
1.4.1. Galaxy Groups
1.4.2. Galaxy Clusters/Superclusters
1.4.3. Galaxy Filaments
1.4.4. Active Galactic Nuclei/Quasars
1.4.5. Radio Galaxies
1.4.6. Supernovae
1.4.7. Intergalactic Stars
1.4.8. Intergalactic Dust
1.4.9. Observable Universe
1.5. Galactic Astronomy
1.5.1. Milky Way
1.6. Cosmology
1.6.1. Big Bang
1.6.2. Cosmic Microwave Background
1.6.3. Dark Matter
1.6.4. Expansion of the Universe
1.6.5. Large-Scale Structure
1.6.6. Primordial Nucleosynthesis
1.7. Planetary Science
1.7.1. Mercury
1.7.2. Venus
1.7.3. Earth
1.7.4. Mars
1.7.5. Asteroids
1.7.6. Jupiter
1.7.7. Saturn
1.7.8. Uranus
1.7.9. Neptune
1.7.10. Pluto
1.7.11. Kuiper Belt Objects
1.7.12. Comets
1.7.13. Meteors
1.8. Stellar Astronomy
1.9. Fundamentals
1.9.1. Celestial Mechanics
1.9.2. Constellations
1.9.3. Eclipses
1.9.4. Energy and Temperature
1.9.5. Gravity
1.9.6. Kepler's Laws
1.9.7. Lunar Phases
1.9.8. Magnitude System
1.9.9. Night Sky
1.9.10. Properties of Light
1.9.11. Relativity
1.9.12. Spectra
1.10. Stars
1.10.1. Binary Stars
1.10.2. Black Holes
1.10.3. Brown Dwarfs
1.10.4. Gamma-Ray Bursts
1.10.5. Hertzsprung-Russell Diagram
1.10.6. Neutron Stars and White Dwarfs
1.10.7. Spectral Types
1.10.8. Star Clusters
1.10.9. Star Formation
1.10.10. Neutron Stars
1.10.10.1. Pulsar
1.10.10.2. Magnetar
1.10.11. Stellar Evolution
1.10.12. Stellar Nucleosynthesis
1.10.13. Supernovae
1.11. Instrumentation
1.11.1. Gamma-Ray Astronomy
1.11.2. Infrared Astronomy
1.11.3. Observatories
1.11.4. Radio Astronomy
1.11.5. Telescopes
1.11.6. Ultraviolet Astronomy
1.11.7. X-Ray Astronomy
2. Mid Infrared
3. Particle Physics
3.1. Accelerator Physics
3.2. Nuclear Physics
3.3. Nuclear Astrophysics
3.4. Particle Astrophysics
3.5. Particle Physics Phenomenology
3.6. Standard Model
3.7. Quantum Field Theory
3.8. Quantum Chromodynamics
3.9. Electroweak Theory
3.10. Effective Field Theory
3.11. Lattice Field Theory
3.12. Lattice Gauge Theory
3.13. Gauge Theory
3.14. Supersymmetry
3.15. Grand Unified Theory
3.16. Superstring Theory
3.17. M-Theory
4. Atomic, Molecular, and Optical Physics
4.1. Atomic Physics
4.2. Molecular Physics
4.3. Atomic and Molecular Astrophysics
4.4. Chemical Physics
4.4.1. Quantum Chemistry
4.5. Optics
4.5.1. Quantum Optics
4.6. Photonics
4.7. Quantum Information Science
4.8. Atom
4.9. Molecule
4.10. Diffraction
4.11. Electromagnetic Radiation
4.12. Laser
4.13. Polarization
4.14. Spectral Line
4.15. Casimir Effect
5. Condensed Matter Physics
5.1. Solid State Physics
5.2. High Pressure Physics
5.3. Low-Temperature Physics
5.4. Nanoscale and Mesoscopic Physics
5.5. Polymer Physics
5.6. BCS Theory
5.6.1. Superconductivity
5.7. Bloch Wave
5.7.1. Wavefunction
5.7.2. Planck's Constant
5.8. Fermi Gas
5.8.1. Fermions
5.8.2. Phases of Matter
5.8.3. Quantum Critical Point
5.8.4. Phase Transitions of Matter
5.9. Fermi Liquid
5.9.1. Fermions
5.9.2. Pauli Exclusion Principle
5.9.3. Adiabaticity
5.9.4. Angle Resolved Photoemission Spectroscopy
5.10. Many-Body Theory
5.10.1. Emergent Phenomena
6. Fundamental Forces
6.1. M-Theory
6.1.1. Quantum Field Theory
6.1.1.1. Electroweak Force
6.1.1.1.1. Weak Nuclear Force
6.1.1.1.2. Electromagnetism
6.1.1.2. Strong Nuclear Force
6.1.2. Gravity
6.1.3. Branes
6.1.4. BFSS Matrix Model
6.1.5. String Theory
6.1.5.1. Strings
6.2. Quantum Gravity
7. Agrophysics
8. Atmospheric Physics
9. Biophysics
10. Computational Physics
11. Cryogenics
12. Dynamics
13. Econophysics
14. Geophysics
15. Homeokinetics
16. Materials Physics
17. Mathematical Physics
18. Mechanics
18.1. Thermodynamics
18.1.1. Heat Engine
18.1.2. Kinetic Theory
18.1.3. Statistical Mechanics
18.1.4. Boltzmann's Constant
18.1.5. Conjugate Variables
18.1.6. Enthalpy
18.1.7. Entropy
18.1.8. Equation of State
18.1.9. Equipartition Theorem
18.1.10. First Law of Thermodynamics
18.1.11. Spontaneous Process
18.1.12. State Function
18.1.13. Statistical Ensemble
18.1.14. Temperature
18.1.15. Thermodynamic Equilibrium
18.1.16. Thermodynamic Potential
18.1.17. Thermodynamic Processes
18.1.18. Thermodynamic State
18.1.19. Thermodynamic System
18.1.20. Third Law of Thermodynamics
18.1.21. Viscosity
18.1.22. Zeroth Law of Thermodynamics
18.2. Classical Mechanics
18.2.1. Lagrangian Mechanics
18.2.2. Hamiltonian Mechanics
18.2.3. Kinematics
18.2.4. Statics
18.2.5. Dynamics
18.2.6. Chaos Theory
18.2.7. Acoustics
18.2.8. Fluid Dynamics
18.2.9. Continuum Mechanics
18.2.10. Newton's Laws of Motion
18.2.11. Density
18.2.12. Dimension
18.2.13. Gravity
18.2.14. Space
18.2.15. Time
18.2.16. Motion
18.2.17. Length
18.2.18. Position
18.2.19. Velocity
18.2.20. Acceleration
18.2.21. Mass
18.2.22. Momentum
18.2.23. Force
18.2.24. Energy
18.2.25. Angular Momentum
18.2.26. Torque
18.2.27. Conservation Law
18.2.28. Harmonic Oscillator
18.2.29. Wave
18.2.29.1. Mechanical Waves
18.2.29.1.1. Waves on Strings
18.2.29.1.2. Acoustic Waves
18.2.29.1.3. Water Waves
18.2.29.1.4. Seismic Waves
18.2.29.1.5. Shock Waves
18.2.29.1.6. Kinematic Waves
18.2.29.1.7. Metachronal Wave
18.2.29.2. Electromagnetic Waves
18.2.29.2.1. Ionizing Radiation
18.2.29.2.2. Visible
18.2.29.2.3. Microwaves and Radio Waves
18.2.29.2.4. Ultra Low Frequency
18.2.29.2.5. Super Low Frequency
18.2.29.2.6. Extremely Low Frequency
18.2.29.3. Quantum Mechanical Waves
18.2.29.4. Gravity Waves
18.2.29.5. Gravitational Waves
18.2.30. Work
18.2.31. Power
18.3. Quantum Mechanics
18.3.1. Scattering Theory
18.3.2. Schrodinger Equation
18.3.3. Quantum Field Theory
18.3.4. Quantum Statistical Mechanics
18.3.5. Path Integral Formulation
18.4. Continuum Mechanics
18.5. Fluid Mechanics
18.5.1. Fluid Statics
18.5.2. Fluid Kinematics
18.5.3. Fluid Dynamics
18.6. Aerodynamics
18.7. Biomechanics
19. Nuclear Physics
20. Optics
21. Psychophysics
22. Plasma Physics
23. Polymer Physics
24. Theoretical Physics
24.1. Classical Mechanics
24.2. Continuum Mechanics
24.3. Solid Mechanics
24.4. Mathematical Physics
24.5. Statistical Physics
24.6. Statistical Mechanics
24.7. Condensed Matter Physics
24.7.1. Solid State Physics
24.7.2. Electronic Structure of Materials
24.8. Atomic Physics
24.9. Computational Physics
24.10. Nuclear Physics
24.11. Fundamental Interaction
24.12. Weak Interaction
24.13. Electroweak Interaction
24.14. Analog Models of Gravity
24.15. Conservation Law
24.16. Conservation of Energy
24.17. Conservation of Mass
24.18. Conservation of Momentum
24.19. Conservation of Angular Momentum
24.20. Thermodynamics
24.21. Laws of Thermodynamics
24.22. Newton's Laws of Motion
24.23. Dynamics
24.24. Dynamo Theory
24.25. Kinetic Theory of Gases
24.26. Electromagnetism
24.27. Field Theory
24.28. Classical Field Theory
24.29. Scattering Theory
24.30. Quantum Field Theory
24.31. Quantum Field Theory in Curved Spacetime
24.32. Conformal Field Theory
24.33. Fluid Mechanics
24.34. Fluid Dynamics
24.35. Information Theory
24.36. Algorithmic Information Theory
24.37. Quantum Information Theory
24.38. Theoretical Computer Science
24.39. Computational Complexity Theory
24.40. Quantum Complexity Theory
24.41. Theory of Relativity
24.41.1. General Relativity
24.41.1.1. Einstein Field Equations
24.41.1.2. Covariance
24.41.1.3. Einstein Manifold
24.41.1.4. Equivalence Principle
24.41.1.5. Four-Momentum
24.41.1.6. Four-Vector
24.41.1.7. General Principle of Relativity
24.41.1.8. Geodesic Motion
24.41.1.9. Gravity
24.41.1.10. Gravitoelectromagnetism
24.41.1.11. Inertial Frame of Reference
24.41.1.12. Invariance
24.41.1.13. Length Contraction
24.41.1.14. Lorentzian Manifold
24.41.1.15. Lorentz Transformation
24.41.1.16. Metric
24.41.1.17. Minkowski Diagram
24.41.1.18. Minkowski Space
24.41.1.19. Principle of Relativity
24.41.1.20. Proper Length
24.41.1.21. Proper Time
24.41.1.22. Reference Frame
24.41.1.23. Rest Energy
24.41.1.24. Rest Mass
24.41.1.25. Relativity of Simultaneity
24.41.1.26. Spacetime
24.41.1.27. Special Principle of Relativity
24.41.1.28. Speed of Light
24.41.1.29. Stress-Energy Tensor
24.41.1.30. Time Dilation
24.41.1.31. Twin Paradox
24.41.1.32. World Line
24.41.2. Special Relativity
24.41.2.1. Time Dilation
24.41.2.2. Relativistic Mass
24.41.2.3. Mass-Energy Equivalence
24.41.2.4. Universal Speed Limit
24.41.2.4.1. Speed of Light
24.41.2.5. Relativity of Simultaneity
24.41.2.6. Length Contraction