From: hwabnig@.-   
      
   On Thu, 23 Jan 2014 21:59:04 -0800 (PST), haiticare2011@gmail.com   
   wrote:   
      
   >I was just wondering if a small laser or other light source can exert any   
   force on dust particles and make them clump. I just wondered if anyone has   
   seen anything like this.   
      
   Yes. Run a strong laser beam across the room and watch the dust   
   particles how they are magically trapped by the beam and slowly pulled   
   towards the light source.   
      
   w.   
      
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