Solar "Heat"

This morning I took this image which my wife calls SOLAR HEAT.  This is a frying pan on my kitchen cabinet along side of a microwave.  Notice the orange "heat" glow at the bottom of the frying pan.  It is not on a stove nor did the microwave have anything to do with it.  Where did the "heat" come from?  Take a look at this image, then see the followup image and see where the "solar heat" came from.