On Thursday, September 24, 2015 at 2:16:48 PM UTC+5:30, Jeroen Belleman wrote:   
   > On 2015-09-24 10:33, ewugkg@gmail.com wrote:   
   > > 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"   
   > >   
   >   
   > This is homework, right?   
   >   
   > Show some initiative. Look up 'multi-color LEDs' or 'additive   
   > color mixing', or something like that.   
   >   
   > Jeroen Belleman   
      
   ------------------   
      
   No it is not homework, it is something of my own interest.   
      
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