# Surface Tension?

Hi,

Just a quick question:

How do you meausre surface tension of a liquid? WHat meathods are used and how do the units reflect the data.

Thanks

Derek Mohammed

arildno
Homework Helper
Gold Member
Dearly Missed
You might have a look at the following site:
http://www.kruss.info/techniques/methods_overview_e.html#Wilhelmy_Plattenmethode [Broken]

Here is some further comments on the Du Nuoy ring method and Wuilhelmy plate method:
http://www.ksvinc.com/sigma703.htm [Broken]

Essentially it seems, each of these methods relies on relating the force needed to detach a simple geometric object from the liquid surface to the surface tension.

Last edited by a moderator:
What do the units stand for? mN/m??? Newton metres/ Metres??

Thanks

mN=10^-3N and the denominator is in metres

SpaceTiger
Staff Emeritus
$T= \frac{F}{l}$