Causing convection in a rotating system  | 
        
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    The vortex columns
    spin in oppoite direction between the top and the bottom.  As the effect of the rotation increases, the temperature structures become vertically uniform.  | 
Experimental conditions
Depth of working fluid: 6cm.
Temperature difference between cold water flowing above the working fluid and warm water flowing below:10°C .Filming conditions
Speeded up 10 times
15 fps