Surface tension object targeted

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SUMMARY

Surface tension is a force that acts at the interface between two bulk phases, such as a fluid and air. In a fluid at rest, sub-parts of the fluid exert attractive forces on each other due to surface tension. However, air, being a gas, does not exhibit significant surface tension effects because the molecules are too far apart to exert non-negligible forces, except during brief collisions. When considering the interaction of a fluid within another fluid, the dynamics of surface tension and molecular interactions become complex and differ significantly from those in gases.

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  • Understanding of fluid dynamics
  • Knowledge of molecular interactions in liquids and gases
  • Familiarity with the concept of surface tension
  • Basic principles of phase transitions
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  • Research the effects of surface tension in various fluids, including water and oil
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quangtu123
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To what I know, surface tension is a force that appear at the interface between 2 bulk phases, and is parallel to that interface.

Let consider a bulk of a fluid in the air. In the bulk of a fluid at rest, two sub-parts of a fluid exert a attractive force on one another due to surface tension.

What I'm asking is that: Do two sub-parts of the air around exert a force on one another? (surface tension of the air) If they do, is the force equal the force in the fluid? If they don't, why? What if I replace the air by another suitable fluid?
 
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In general the molecules in a gas are too far from each other in order to produce non-negligible forces on each other except during very brief collisions. That's the main difference between a liquid and a gas.
 
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Ok so what would happen if I put a fluid inside some other fluid?
 

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