Surface Tension(Science and Technology)

                         SURFACE TENSION

It is defined as a tensile force working on the surface of a liquid in contact with air(gas) or between two immiscible liquid.

Surface Tension denote by ' Little sigma'.
Unit of surface tension 'N/m'.
 Newton/meter.

Pressure force relation for water droplet is Surface tension is

P=4 x sigma/ d.

P= Pressure force (Intensity of pressure).
Sigma= Surface tension.
d= diameter of water droplet.

Pressure force relation of Soap bubble is Surface tension is 

P=8 x sigma/ d.

P= pressure force
Sigma= Surface tension. 
d= diameter of Soap bubble.