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Relationship between surface tension and the shape of a liquid drop

  1. Apr 21, 2008 #1
    i don't know how to describe the relationship between surface tension and the shape of a liquid drop. Also what are the attractive forces that increase surface tension?
     
  2. jcsd
  3. Apr 21, 2008 #2

    Andy Resnick

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    The free energy is minimized by minimizing the surface area. For positive interfacial energy, that corresponds to a sphere (in the absence of gravity). For negative interfacial energy, that corresponds to mixing- *maximizing* the intrfacial area.

    The atomic origins of interfacial energy are murky, to put it mildly. One need not discuss atoms to discuss dividing surfaces.
     
  4. Apr 21, 2008 #3

    GCT

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    Depends on where the drop is - is it on a surface? Cohesion due to intermolecular attractions answers your second question it is your responsibility to find the list of such attractions.
     
  5. Apr 21, 2008 #4
    yes it's on a surface
     
  6. Apr 21, 2008 #5

    GCT

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    Then factor in adhesion-also research the topic of contact angle-the more the liquid molecule is attracted to the surface the less spherical it's going to be.
     
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