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IEVref: | 113-03-42 | ID: | |

Language: | en | Status: Standard | |

Term: | surface tension | ||

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Symbol: | γσ
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Definition: | at a point of a line on the interface of two fluids or a fluid and a solid, quantity equal to the derivative of the component F of the force, tangent to the surface and perpendicular to the line, with respect to curvilinear abscissa l, thus $\gamma =\text{d}F/\text{d}l$NOTE 1 The surface tension is equal to the work Δ NOTE 2 The coherent SI unit of surface tension is newton per metre, N/m or, equally, joule per square meter, J/m | ||

Publication date: | 2011-04 | ||

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Internal notes: | 2017-06-02: Cleanup - Remove Attached Image 113-03-42en.gif | ||

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NOTE 1 The surface tension is equal to the work Δ*W* needed to expand the surface by an area Δ*A*, divided by Δ*A*, thus *γ* = Δ*W* / Δ*A**.*

NOTE 2 The coherent SI unit of surface tension is newton per metre, N/m or, equally, joule per square meter, J/m^{2}.