Individual #physics__physic__physical_science__natural_philosophy__naturalphilosophy  the science of matter and energy and their interactions
  >part:  #acoustics  #astronomy  #aeronautics  #biophysics  #cryogenics  #crystallography  #electromagnetics  #electronics  #electrostatics  #mechanics  #nuclear_physics  #optics  #particle_physics  #plasma_physics  #quantum_physics  #rheology  #solid-state_physics  #statistical_mechanics  #thermodynamics
  part:  #wave_theory_of_light  #corpuscular_theory_of_light  #kinetic_theory_of_gases  #Einstein's_theory_of_relativity  #quantum_theory
  type:  #natural_science  the sciences involved in the study of the physical world and its phenomena

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