> ...as the Newtons law thingy goes I know for a fact with my bees at
> least that they have a sort of cycle with an early morning temp of about
> 32C a midday temp of about 34C and an evening temp of 35 -36C. So we can
> hope maybe by raising that early morning temp to say about 33 or 34 for
> two hours longer will have a major effect.
 
I've left a indoor/outdoor thermometer in the brood area of the hive and
found almost no variation over the day or between weather conditions.
Regulation was closer than in most man-made incubators.  As I recall, it
was within one degree Fahrenheit.
 
Allen