Dorsey Method for Interfacial Tension
The Dorsey method is an old graphical technique for determining surface tension on large sessile drops. It was developed for molten metal drops. It has two related advantages:
- it can be done graphically (manually), if desired
- it can tolerate "mal-formed" drops that are not perfectly symmetric about their central axis.
It is not suitable for drops much less than 10mm in diameter, so truly it is for large drops.
For a more complete description and reference, see Dorsey Method for Interfacial Tension.