What Is Surface Tension?


  • Did you ever notice that drops of water are always spherical in shape?
  • Have you ever seen insects floating over surface of water?


These phenomenon takes place due to an interesting property of liquids called surface tension. Surface tension may be defined as the inward forces of attraction that act on the surface of a liquid and help to reduce the surface area of that liquid. Surface tension helps the liquid drops to maintain spherical shape. You may assume surface tension as an invisible stretchable film surrounding that liquid.