Queryspace - why does a rainbow disappear from your sight on staring at it without blinking and why does it reappear after a blink?
 
     
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Balagopal
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Sep 12, 2007, 8:20 am
why does a rainbow disappear from your sight on staring at it without blinking and why does it reappear after a blink? 
i used to have this doubt since my childhood and never got to know why even after asking many of my teachers.. 

   
   

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