Surface Tension

Surface tension, abbreviated as \( \sigma \) (Greek symbol sigma), is the energy or force at the surface of a liquid that holds it together.

 

Surface tension formula
\(\large{ \sigma = \frac{F}{l}   }\)
Symbol	English	Metric
\(\large{ \sigma }\)  (Greek symbol sigma) = surface tension	\(\large{\frac{lbf}{ft}}\)	\(\large{\frac{N}{m}}\)
\(\large{ F }\) = force per unit length	\(\large{ lbf }\)	\(\large{N}\)
\(\large{ l }\) = length in which force acts	\(\large{ ft }\)	\(\large{ m }\)