| FUNDAMENTAL AREAS OF PHENOMENOLOGY(INCLUDING APPLICATIONS) |
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Can Heavier Liquid Float on Top of a Lighter One? |
| A. H. Ayyad**, F. Takrori
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Department of Chemistry, Faculty of Science and Technology, Hebron University, P.O. Box 40, Hebron, West Bank, Palestine
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| Cite this article: |
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A. H. Ayyad, F. Takrori 2011 Chin. Phys. Lett. 28 014701 |
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Abstract We report on a first observation of a floating spherical Hg (density 13 g/cm3) drop on top of a glycerin (density 1.26 g/cm3) drop, the latter is hemispherical and about four times larger in volume. This observation is clearly against nature's gravity law and has never been reported before. Here we present spectacular high resolution photos that clearly demonstrate this remarkable floating phenomenon. Using milli-Q water, the Hg drop would stay down adhered at the triple line. Instead, the coincidental use of tap water displays the same phenomenon. Increasing the volume of the supporting liquid to a certain value causes the Hg drop to sink. A 5-M NaCl aqueous solution is found enough to show the same floating phenomenon. This floating mercury as a phenomenon is puzzling. On this length scale it seems that surface tension and curvature dominate over gravity.
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| Keywords:
47.55.D-
47.55.N-
47.55.Np
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Received: 03 June 2010
Published: 23 December 2010
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[1] Atkins P W and Paula J de 2006 Physical Chemistry 8th edn (Oxford: Oxford University)
[2] Ayyad A H and Freyland W 2002 Surf. Sci. 506 1
[3] Bonn D, Eggers J, Indekeu J, Meunier J and Rolley E 2009 Rev. Mod. Phys. 81 739
[4] Sears F W and Salinger G L 1975 Thermodynamics, Kinetics Theory and Statistical Mechanics 3rd edn (Reading, MA: Addison-Wesley)
Becker R 1967 Theory of Heat (Berlin: Springer)
Redlich O 1978 Thermodynamics: Fundamentals, Applications (Amsterdam: Elsevier)
[5] Widom B 1978 J. Chem. Phys. 68 3878
[6] de Gennes P G 1985 Rev. Mod. Phys. 57 827
[7] Bonn D and Ross D 2001 Rep. Prog. Phys. 64 1085
[8] Tostmann H et al 2000 Phys. Rev. Lett. 84 4385
[9] Johnson R E and Sadhal S S 1985 Ann. Rev. Fluid Mech. 17 289
[10] Mahadevan L, Adda-Bedia M and Pomeau Y 2002 J. Fluid Mech. 451 411
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