XPost: alt.photography   
   From: areilly---@bigpond.net.au   
      
   On Wed, 06 Jul 2011 07:15:38 -0700, Salmon Egg wrote:   
      
   > As much as I like Wikipedia, it did not give me a good definition for   
   > reflex. It seems to be associated with the use of a mirror or prism for   
   > viewing an object for a camera. The Webster Collegiate Dictionary is not   
   > of much help. While I know what it means for a camera, the term reflex   
   > does not seem to describe what goes on in a reflex camera. Information   
   > about the specific camera not in the definition of reflex is required.   
   >   
   > "Reflex" is also used as a medical/biological term. The term was also   
   > used in radio where there were circuits that used tubes for double duty.   
   > For example, one tube could be used simultaneously as a radio frequency   
   > amplifier and an audio amplifier.   
      
   The dictionary in my Mac seems to have a reasonable definition.  As well   
   as the medical/biological definitions that you describe it mentions that   
   "a reflex" is an archaic term for a reflected source of light.  Also   
   mentions that the word derives (16th century) from the latin "reflexus"   
   which means 'a bending back', which seems to cover what is going on   
   fairly well, IMO.   
      
   Cheers,   
      
   --   
   Andrew   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)