Random thoughts of a wandering physicist…

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Baby metamerism May 12, 2007

Filed under: Uncategorized — gloplastic @ 9:13 am

Changing the nappy on the “Little ‘un” recently, we thought we identified an internal problem. Breast fed baby poo colour is a good health indicator. Yellow is good and green (for instance) is bad. Unfortunately baby poo appears to suffer from metameric failure. That is it appears a different colour under a different type of light. The dark green colour under the bedroom light (TL84ish light with 6500K colour temp) looked much more normal under daylight in the bathroom, or even slightly brown under the bathroom light (illuminant A)* Why can’t the baby manuals specify the illuminant under which the pictures were taken to avoid potential misidentification of baby trouble!

 *Apolgies to any protanopes, deuteranopes, tritanopes, achromats or other anomalous individuals….. boy the world must be murky for you.

 

One Response to “Baby metamerism”

  1. Dr Colour Says:

    Any samples for the colour matching cabinet?

    A


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