Surface tension is one of the most important and interesting properties of the fluids. Surface tension plays pivotal role in daily life. It is used in a variety of applications i.e separation of water , loundary , water treatment plant , chemical test for jaundice , et. Surface tension is also essential for the transfer of energy from wind to water to create waves.Increasing the temperature surface tension reduces. There are a lot of methods to calculate surface tension , some methods is as follows: Pendant drop method , Jaeger's method, the drop - weight model , Quinke method , Ferguson and Kennedy 's method , Ripple's method , the ring method , Wilhelmy plate method , Searl's Torsion balance, Spinning drop method , etc. Really surface tension is very important for us.