Surface Bubbles in the Bathtub and Reflections on Ripple Tanks

Greenslade, Thomas B.

doi:doi:10.1119/1.3670076

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The Physics Teacher -- January 2012 -- Volume 50, Issue 1, pp. 17

Surface Bubbles in the Bathtub and Reflections on Ripple Tanks

Thomas B. Greenslade, Jr.

Kenyon College, Gambier, OH

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Abstract

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Bathtubs are splendid places for studying physics! Recently I was happily splashing about and noticed that the light from the lamp above me was being focused as bright spots on the bottom of the tub. Closer inspection showed that the spots were surrounded by dark rings. This pattern turned out to be due to the lensing effect of bubbles floating on the surface of the water.

KEYWORDS and PACS

Keywords

bubbles, light reflection, physics education, student experiments, surface tension, tanks (containers)

PACS

01.50.My

Demonstration experiments and apparatus
68.03.Cd

Surface tension and related phenomena

PUBLICATION DATA

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0031-921X (print)

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$abstract.society.value is a Member of CrossRef

American Association of Physics Teachers

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http://dx.doi.org/10.1119/1.3670076

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