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]]
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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.

Soapfilm1.png Figure 1.

Physics of soap film

Soapfilm2.jpg

Soapfilm4.jpg

Plateau's laws

Soapfilm3.jpg



http://www.soapbubble.dk/en/bubbles/geometry.php

Keyword in references:

A public study of the lifetime distribution of soap films