Search

MiS Preprint Repository

We have decided to discontinue the publication of preprints on our preprint server as of 1 March 2024. The publication culture within mathematics has changed so much due to the rise of repositories such as ArXiV (www.arxiv.org) that we are encouraging all institute members to make their preprints available there. An institute's repository in its previous form is, therefore, unnecessary. The preprints published to date will remain available here, but we will not add any new preprints here.

MiS Preprint
71/2010

Thomas Young's Surface Tension Diagram: Its History, Legacy, and Irreconcilabilities

Robert Finn, John McCuan and Henry C. Wente

Abstract

The Young diagram for determining the contact angle at a triple interface formed by two fluids with a solid, although based on speculative reasoning, found on its publication in 1805 a universal acceptance, without reservation. Later expository articles pointed out consequences that had initially been overlooked, but which were consistent in the specific configurations considered. More recently reasoning disputing the construction has appeared, and examples – the most recent of them by the present initial author – were introduced, putting the underlying concept into serious doubt. Nevertheless, the construction remains firmly embedded in the curricula of major universities and institutes throughout the world; it continues to be used in engineering design, and two articles emphatically defending it have appeared recently in major journals. In the present note we outline past literature and provide a more precise statement of the Young criterion than is customary. We present explicit examples displaying erroneous reasoning in one of the articles defending the criterion (the other having already been refuted in an earlier publication). Finally, we call attention to a direct conflict between the Young construction and the classical Wilhelmy method for measuring surface tension at fluid/fluid interfaces.

Received:
Nov 18, 2010
Published:
Nov 24, 2010

Related publications

inJournal
2012 Repository Open Access
Robert Finn, John McCuan and Henry C. Wente

Thomas Young's surface tension diagram : its history, legacy, and irreconcilabilities

In: Journal of mathematical fluid mechanics, 14 (2012) 3, pp. 445-453