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Originally Posted by Michael Mozina
Who said a WORD about temperature? I asked you why VISIBLE LIGHT stopped shining in that single location. That location is FULL of all sorts of HOT silicon. Nobody is denying the presense of HEAT. It's LIGHT I'm talking about, not HEAT. Why do you have a hard time distinguishing between these two issues?
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Hot objects give off light-if something is hot enough it glows.
This is one of those laws of physics which you claim to have respect for.
So if the temperature of the centre of a sunspot is around 4570 K as stated in the link given by
Van Rijn, it will certainly be giving off a heck of a lot of light; the sunspot will be hotter than an incandescent light bulb filament.
It looks dark by contrast and for no other reason.