====== Group Velocity ======

<tabbox Why is it interesting?> 

<tabbox Layman> 

  * https://gravityandlevity.wordpress.com/2009/05/21/when-group-velocity-is-an-optical-illusion/
  
<tabbox Student> 

<note tip>
In this section things should be explained by analogy and with pictures and, if necessary, some formulas.
</note>
 
<tabbox Researcher> 

<note tip>
The motto in this section is: //the higher the level of abstraction, the better//.
</note>

  
<tabbox Examples> 

--> Example1#

 
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--> Example2:#

 
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<tabbox FAQ> 
  
<tabbox History> 

</tabbox>