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hydrodynamics

## hydrodynamics

```  3  definitions  found

From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]:

Hydrodynamics  \Hy`dro*dy*nam"ics\,  n.  [Hydro-,  1  +  dynamics:  cf
F.  hydrodynamique.]
That  branch  of  the  science  of  mechanics  which  relates  to
fluids,  or  as  usually  limited,  which  treats  of  the  laws  of
motion  and  action  of  nonelastic  fluids,  whether  as
investigated  mathematically,  or  by  observation  and
experiment;  the  principles  of  dynamics,  as  applied  to  water
and  other  fluids.

Note:  The  word  is  sometimes  used  as  a  general  term,  including
both  hydrostatics  and  hydraulics,  together  with
pneumatics  and  acoustics.  See  {Hydraulics}.

From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]:

Mechanics  \Me*chan"ics\,  n.  [Cf.  F.  m['e]canique.]
That  science,  or  branch  of  applied  mathematics,  which  treats
of  the  action  of  forces  on  bodies.

Note:  That  part  of  mechanics  which  considers  the  action  of
forces  in  producing  rest  or  equilibrium  is  called
{statics};  that  which  relates  to  such  action  in
producing  motion  is  called  {dynamics}.  The  term
mechanics  includes  the  action  of  forces  on  all  bodies,
whether  solid,  liquid,  or  gaseous.  It  is  sometimes
however,  and  formerly  was  often  used  distinctively  of
solid  bodies  only:  The  mechanics  of  liquid  bodies  is
called  also  {hydrostatics},  or  {hydrodynamics},
according  as  the  laws  of  rest  or  of  motion  are
considered.  The  mechanics  of  gaseous  bodies  is  called
also  {pneumatics}.  The  mechanics  of  fluids  in  motion,
with  special  reference  to  the  methods  of  obtaining  from
them  useful  results,  constitutes  {hydraulics}.

{Animal  mechanics}  (Physiol.),  that  portion  of  physiology
which  has  for  its  object  the  investigation  of  the  laws  of
equilibrium  and  motion  in  the  animal  body.  The  most
important  mechanical  principle  is  that  of  the  lever,  the
bones  forming  the  arms  of  the  levers,  the  contractile
muscles  the  power,  the  joints  the  fulcra  or  points  of
support,  while  the  weight  of  the  body  or  of  the  individual
limbs  constitutes  the  weight  or  resistance.

{Applied  mechanics},  the  principles  of  abstract  mechanics
applied  to  human  art;  also  the  practical  application  of
the  laws  of  matter  and  motion  to  the  construction  of
machines  and  structures  of  all  kinds.

From  WordNet  r  1.6  [wn]:

hydrodynamics
n  :  study  of  fluids  in  motion  [syn:  {hydrokinetics}]
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