Surface Tension Help i Cant Understand

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Interfacial tension is generally lower than surface tension due to stronger adhesive forces between two liquid phases compared to those between a liquid and a gas. Surface tension specifically refers to the interface between a liquid and a vacuum, making it a distinct concept. Interfacial energy can vary, indicating different wetting behaviors, including low (wetting), high (partial wetting), and even negative values (diffusion). Understanding these differences is crucial for applications in fluid dynamics and material science. Clarifying these concepts can enhance comprehension of fluid interactions.
bestfmuzik
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Clarification on surface and interfacial tension?
Interfacial tensions are less than surface tensions...
The reason given in book is :-
because the adhesive forces between two liquid phases forming an interface are greater than when a liquid and a gas phase exist together.

I don't understand this ...Why interfacial tension is low ...?
 
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bestfmuzik said:
Clarification on surface and interfacial tension?
Interfacial tensions are less than surface tensions...
The reason given in book is :-
because the adhesive forces between two liquid phases forming an interface are greater than when a liquid and a gas phase exist together.

I don't understand this ...Why interfacial tension is low ...?

'Interfacial energy' is often used interchangeably with 'surface tension'. Strictly speaking, 'surface tension' refers to the interface between a substance and vacuum- in this sense, it's a limit.

Interfacial energy can be low (wetting), high (partial wetting or nonwetting), and even negative (diffusion).
 

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