How iditotic - I have never climed that the Sun is a bllack body.
How idiotic you are reduced to using terms like "idiotic" in every post because you refuse to read a textbook on MHD theory and insist on debating MHD theory and solar physics!
The light emitted by the Sun has a nearly black body spectrum.
So what? "Nearly" doesn't count for anything outside of horseshoes and hand granades.
I am not aware of any situation in which the light emitted by the Sun (a nearly black body spectrum) is treated as an actual black body spectrum.
The closest that astronomers come to this is when they claculate the temperature of the photosphere where the 5770 K figure is the effective temperture.
It's simply an "average energy output".
What astronomers including the LMSAL astronomers do notiice is that is that the sun's coronal loops come up and through the surface of the photosphere, leaving bright points at it's footprints on that particular surface. It also leaves N/S magnetic field alignments that directly relate to the magnetic filed of the loops. All loops go up through the photosphere.
So any images, e.g. 1700A and to a lesser extent, 1600A images, show this.
They all show the effect of the discharges in the solar atmosphere. They all show the effect of the loops short circuiting under the photosphere and blowing material *up and away* from the surface of the photosphere too. Those activities preclude "solar moss" activity from occurring *above* the photosphere in some magic "transition region" in the sky! The loops all begin *under* the photosphere. They are radiating at a million degrees even before they exit the photosphere. The loops are filled with million degree plasma that is heated by *powerful current* that leave their magnetic field signatures on the surface of the photosphere. LMSAL is utterly ignorant of these things.
Yes it is nearly a blck body spectrum:
Sun
So what? At the high energy end of the spectrum it is *NOTHING LIKE* a "black body".
It is dominated by the strong emission lines from H and He, e.g. teh Balmer series.
It's dominated by Neon emissions and Silicon emissions too. A "black body" surface at 5700KM could never produce such Neon ion emissions.
There is no "white" light due to impurities in that Neon because that Neon is an impurity in H and He plasma.
Again, your statement is simply false. H and He are byproducts of the fusion processes going on in the solar atmosphere and inside the sun. They have nothing to do with solar composition *in total*. The sun is a *plasma diffuser*, not a plasma mixer. SDO killed your "mixing by convection" theories dead.
That is where the web site goes idiotically wrong because the TRACE 171 A passband never detects light from the photosphere - that is the dark area in the TRACE part of the image
The idiotically wrong thing that happened is an IT guy that never read a book on MHD theory insists on discussing it *incorrectly* anyway. That's the only idiotically wrong thing going on here, oh and the pure cyber harassment of course.
If you ceased using loaded language and you only spoke the truth, you'd apparently have nothing to say.

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And even more idiotic is the assertion that the x-rays detected by Yohkoh are emitted at the photosphere

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X rays are emitted everywhere inside the current carrrying loop, even before it exits the surface of the photosphere. Once it exits that surface, those x-rays become visible. Again with the "idiotic" language. Really RC, you take verbal abuse to a whole new level of low.
You are still in complete denial of some solar physics:
Not me. I've read textbooks on MHD theory. I've read Peratt's entire book, I didn't just quote mine from it like you. I've studied solar physics my entire adult life in fact. You on the other hand refuse to even read a single textbook on MHD theory.
passband stops detecttion of light from cooler plasma than its bottom limit. So the minimum temperature of plasma in the TRACE 171A passband is 160,000 K. This is not the photosphere.
Duh! Nobody denies that.
The photosphere does not emit detectable light in the 171A passband:
No, but the current carrying coronal loops do emit that 171A light over the entire loop, both above and below the surface of the photosphere.
The situation with x-rays is even worse - millions of degrees!
Each loop is full of million degree plasma RC. Guess what heats that plasma to millions of degrees inside of *individual* loops?
The base of the loop in this image in in the transition zone (plasma with temperatures > 160,000 K).
That's "kinda true". The "transition zone" is located 4800KM *under* the surface of the photosphere, not in the upper chromosphere as we observe in the SDO first light images. If in fact the transition region started in the upper chromosphere as LMSAL claimed, then the green light would begin inside the orange band, above the cut out circular ring! Instead it starts *4800 KM under* that line!
A bit of astronomy for you, Michael:
A retired IT guy that steadfastly refuses to read a textbook on MHD theory has nothing to teach me about astronomy or solar physics. All you've taught me is how far people will go in order to harass and verbally abuse others on the internet. That's all you have to "teach" anyone on this topic in fact.
When are you going to read a real textbook on MHD theory RC?