1. 
   Carcel
   Car'cel noun (Photom.) A light standard much used in France, being the light from a Carcel lamp of stated size and construction consuming 42 grams of colza oil per hour with a flame 40 millimeters in height. Its illuminating power is variously stated...
   Found op http://www.encyclo.co.uk/webster/C/24
   
   
2. 
   Carcel
   • (n.) A light standard much used in France, being the light from a Carcel lamp of stated size and construction consuming 42 grams of colza oil per hour with a flame 40 millimeters in height. Its illuminating power is variously stated at from 8.9 to 9.6 British standard candles.
   Found op http://thinkexist.com/dictionary/meaning/carcel/
   
   
3. 
   carcel
   a former French unit for measuring the intensity of light. The unit was defined as the intensity of a standard Carcel lamp, which burnt colza oil in a precisely defined way. One carcel equals about 9.74 candelas (see above).
   Found op http://www.unc.edu/~rowlett/units/dictC.html
   
   
4. 
   Carcel
   The Carcel is a former French unit for measuring the intensity of light. The unit was defined in 1860 as the intensity of a Carcel lamp with standard burner and chimney dimensions , which burnt colza oil In modern terminology one carcel equals about 9.74 candelas. ...
   Found op http://en.wikipedia.org/wiki/Carcel
   
   

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