From: jeroen@nospam.please   
      
   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   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)