The entropy of systems

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by north</i>
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but the thing is our star(Sun) is not exploding,is it?
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I think it will in a few billion years when closer to the center of the galaxy. Where do you think all this galactic dust comes from at the center of the Milky Way ?

The point is that the center of a star is not at the same entropy as its surface.

meaning what exactly?

1) That not only does a system have entropy but so does the atom.
2) That the entropy of the atom varies with its position in a system.
3) That a system's entropy varies because of the atom.

<i>Originally posted by GD</i>
<br />That not only does a system have entropy but so does the atom.
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why is an explaination of Sun spots blackness?

<blockquote id="quote"><font size="2" face="Verdana, Arial, Helvetica" id="quote">quote:<hr height="1" noshade id="quote"><i>Originally posted by north</i>
<br />how do you explain the "blackness" phenomena in Sun spots?<hr height="1" noshade id="quote"></blockquote id="quote"></font id="quote">The human eye is able to adjust to an enormous range of brightness levels. Some type of cameras can emulate its technique. The eye does this adjustment by rendering the brightest lights in our field of vision to an arbitrary "maximum intensity" level, usually all-white (representing all wavelengths). It then reduces all other lights to dimmer levels, making them appear more gray or black. Usually, the dimmest objects in our field of vision appear all-black.

In image processing, this is called "adjusting the contrast". The smaller the difference between the brightest and dimmest objects in our field of vision, the greater is the number of different shades of gray (or levels of dimness) that we can discern.

Sunspots are actually very hot, very bright, and rather red parts of the solar photosphere, as is obvious when they are photographed in isolation from the surrounding photosphere. But they are dimmer than the light around them. So we see them as black, even though they are merely a bit less hot, white, and bright than the photosphere. -|Tom|-

<i>Originally posted by north</i>
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<i>Originally posted by GD</i>
<br />That not only does a system have entropy but so does the atom.
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why is an explaination of Sun spots blackness?

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put more clearly, why does system of and/or atomic entropy give an explainataion of Sun spot blackness? since we can not see the end of it's depth(blackness)where does it end and what is the essence of the blackness? and what are it's(blackness,void)connotations of no end? Hmm........interesting? well just an observation.
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