Concetto Gianino 2008 Phys. Educ. 43 627 doi:10.1088/0031-9120/43/6/010
Concetto Gianino
Show affiliationsIn this article I describe an experiment involving the Leidenfrost phenomenon, which is the long lifetime of a water drop when it is deposited on a metal that is much hotter than the boiling point of water. The experiment was carried out with high-school students. The Leidenfrost point is measured and the heat laws are used to estimate the thickness of the vapour layer, d≈0.06 mm, which prevents the drop from touching the hotplate.
Issue 6 (November 2008)
Received 1 May 2008, in final form 20 June 2008
Concetto Gianino 2008 Phys. Educ. 43 627
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