Difference between revisions of "Soap films"
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==Introduction== | ==Introduction== | ||
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| + | Soap films are thin layers of liquid (usually water) surrounded by air. A soap bubble is essentially of a thin layer of water film that separates the air inside and outside of the bubble. Another example where soap films are found is foam, which consists of a network of thin water films that are connected in accordance to Plateau's laws, which will be explained in a later section. Soap films are stable due to the presence of surfactants, usually ampiphilic molecules, such as sodium dodecyl sulfate which has a hydrophilic head that interacts preferentially with water and a hydrophobic tail that interacts preferentially with air. This is schematically shown in figure 1. | ||
[[image:soapfilm1.png]] | [[image:soapfilm1.png]] | ||
| + | Figure 1. | ||
==Physics of soap film== | ==Physics of soap film== | ||
Revision as of 05:11, 4 December 2011
Contributed by Daniel Daniel
Introduction
Soap films are thin layers of liquid (usually water) surrounded by air. A soap bubble is essentially of a thin layer of water film that separates the air inside and outside of the bubble. Another example where soap films are found is foam, which consists of a network of thin water films that are connected in accordance to Plateau's laws, which will be explained in a later section. Soap films are stable due to the presence of surfactants, usually ampiphilic molecules, such as sodium dodecyl sulfate which has a hydrophilic head that interacts preferentially with water and a hydrophobic tail that interacts preferentially with air. This is schematically shown in figure 1.
Figure 1.
Physics of soap film
Plateau's laws
http://www.soapbubble.dk/en/bubbles/geometry.php
