From: pcdhSpamMeSenseless@electrooptical.net   
      
   On 1/26/2014 6:58 AM, haiticare2011@gmail.com wrote:   
   > The simmer circuit is interesting - I believe it must exist in the   
   > "proportional" zone directly below the "Geiger" zone, voltage-wise.   
   > This comes up a lot in ion chamber technology to detect particles.   
   >   
   > But what I want to ask Phil is why he did use the "orange" led's -   
   > opting for a white led and IF (intererence filter.) You must pardon   
   > me for curiosity, as it's these "knife-edge" decisions which are   
   > interesting in engineering.   
      
   Because there isn't any 578-nm emission from the orange LEDs.  You have   
   to have some light there before filtering helps. ;)   
      
   > I'm going to suppose it was because the exact color of the eggs   
   > required a critical knowledge of what's going on in this "warm"   
   > wavelength? Or were there other factors? (You mentioned low output   
   > from the led's in this region, but I see the "orange" manufacturers   
   > bragging about brightness.)   
      
   Nothing very exciting--it's just trying to sort out a small haemoglobin   
   bump on top of _huge_ slope due to protoporphyrin.  The protoporphyrin   
   absorption can be 99.9% at the haemoglobin wavelength, which makes life   
   a little bit exciting.   
      
   Cheers   
      
   Phil Hobbs   
      
   --   
   Dr Philip C D Hobbs   
   Principal Consultant   
   ElectroOptical Innovations LLC   
   Optics, Electro-optics, Photonics, Analog Electronics   
      
   160 North State Road #203   
   Briarcliff Manor NY 10510   
      
   hobbs at electrooptical dot net   
   http://electrooptical.net   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)