On Wednesday, September 23, 2015 at 5:47:54 PM UTC+5:30, Phil Hobbs wrote:   
   > >What happens at the point of intersection of 2 lasers.   
   > >If 2 lasers of different colour intersect, what will be happening   
   > >at the point of intersection? Won't colour mixing happen??   
   > >Won't that point where the lasers intersect be of different colour?   
   > >For example if we use a green and a red laser then will not the point   
   > >of intersection be yellow, if we use red and blue will not the point   
   > >of intersection be magenta? The lasers are intersecting just in air.   
   >   
   > In the absence of scattering, nothing happens whatsoever. The beams pass   
   through each other without even noticing.   
   >   
   > If the air is dusty, the colours in the scattered light will mix in much the   
   same way as with LEDs. This is a purely visual effect, though--you won't get   
   additional wavelengths, because the scattering is linear.   
   >   
   > Cheers   
   >   
   > Phil Hobbs   
      
   Please explain "as with LEDs"   
      
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