par Pétré, Georges 
;Azouni, Maherzia Aza
Référence Journal of colloid and interface science, 98, 1, page (261-263)
Publication Publié, 1984-03
;Azouni, Maherzia AzaRéférence Journal of colloid and interface science, 98, 1, page (261-263)
Publication Publié, 1984-03
Article révisé par les pairs
| Résumé : | The equilibrium surface tension of an aqueous solution of fatty alcohol/air goes through a minimum when the temperature is raised. As a consequence, the surface tension gradient originated by a given temperature difference between two regions of a free surface has to be reversed when the temperature increases. Simple devices are built-up to visualize this effect. A defined local region of the free surface is heated by a metallic plate near the interface. Talc particles on the surface show surface motion using a profile projector. The expected inversion of the direction of the talc particles with increasing temperature is often observed. © 1984 Academic Press, Inc. All rights reserved. |
