Individual #hydrostatics  study of the mechanical properties of fluids that are not in motion
  >part of:  #fluid_mechanics__fluidmechanic__hydraulics  study of the mechanics of fluids
     >part of:  #mechanics__mechanic  the branch of physics concerned with the motion of bodies in a frame of reference
        >part of:  #physics__physic__physical_science__natural_philosophy__naturalphilosophy  the science of matter and energy and their interactions

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