- Joined
 - Jul 27, 2007
 
- Messages
 - 3,642
 
- Points
 - 63
 
an RGB laser beam is coherent, it's just not truely white as "white" is all wavelengths, Ar/Kr lasers get closer as they lase at many more lines than just RGB, but there's still gaps so it's not perfect either
				
			
	
