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hottest part of Sun and hottest part of a fireplace question & observation
Now I am not sure of my observation that the only blue flame is near
the outer topmost edge of the spent log. Blue near the top surface, more reddish below the blue and then almost white in the middle. That is what I see but perhaps my sight is at fault. Now with the Sun, if I have it correct near the surface is the hottest part of the Sun. So my question is why the blue, and the blue is the hottest, why the blue in a log fireplace on the surface of the log? Is it because the density of oxygen is greatest near the surface whereas going inside the spent log less oxygen and thus not as hot. If oxygen density is the answer for why blueflame on top surface, then what is the answer for the Sun as to why its outer layer is the hottest? My mind would like to say it is also a matter of *oxygen density* greatest on the outer surfaces of the Sun but not sure if that is the case. Does an expert on the Sun want to weigh in. Archimedes Plutonium whole entire Universe is just one big atom where dots of the electron-dot-cloud are galaxies |
#2
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hottest part of Sun and hottest part of a fireplace question & observation
"Archimedes Plutonium" wrote in message om... Now I am not sure of my observation that the only blue flame is near the outer topmost edge of the spent log. Blue near the top surface, more reddish below the blue and then almost white in the middle. That is what I see but perhaps my sight is at fault. Now with the Sun, if I have it correct near the surface is the hottest part of the Sun. Such a great amount of speculation from such a totality of ignorance, eh? If you are referring to the photosphere, the "surface" is the coolest part of the Sun, not the hottest. So my question is why the blue, and the blue is the hottest, why the blue in a log fireplace on the surface of the log? Is it because the density of oxygen is greatest near the surface whereas going inside the spent log less oxygen and thus not as hot. Blue isn't necessarily the hottest part of a flame. The colours in a flame are due to chemical reactions during combustion, not radiative transfer through a hot medium. The red or orange glow of a burning log is thermal or blackbody radiation, however. If oxygen density is the answer for why blueflame on top surface, then what is the answer for the Sun as to why its outer layer is the hottest? My mind would like to say it is also a matter of *oxygen density* greatest on the outer surfaces of the Sun but not sure if that is the case. The Sun is not combusting or burning like a fire; you really ought to learn some basics before posting. Does an expert on the Sun want to weigh in. Archimedes Plutonium whole entire Universe is just one big atom where dots of the electron-dot-cloud are galaxies -- Mike Dworetsky (Remove "pants" spamblock to send e-mail) |
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hottest part of Sun and hottest part of a fireplace question & observation
"Mike Dworetsky" wrote in message ... "Archimedes Plutonium" wrote in message om... Now I am not sure of my observation that the only blue flame is near the outer topmost edge of the spent log. Blue near the top surface, more reddish below the blue and then almost white in the middle. That is what I see but perhaps my sight is at fault. Now with the Sun, if I have it correct near the surface is the hottest part of the Sun. Such a great amount of speculation from such a totality of ignorance, eh? If you are referring to the photosphere, the "surface" is the coolest part of the Sun, not the hottest. So my question is why the blue, and the blue is the hottest, why the blue in a log fireplace on the surface of the log? Is it because the density of oxygen is greatest near the surface whereas going inside the spent log less oxygen and thus not as hot. Blue isn't necessarily the hottest part of a flame. The colours in a flame are due to chemical reactions during combustion, not radiative transfer through a hot medium. The red or orange glow of a burning log is thermal or blackbody radiation, however. If oxygen density is the answer for why blueflame on top surface, then what is the answer for the Sun as to why its outer layer is the hottest? My mind would like to say it is also a matter of *oxygen density* greatest on the outer surfaces of the Sun but not sure if that is the case. The Sun is not combusting or burning like a fire; you really ought to learn some basics before posting. Does an expert on the Sun want to weigh in. Archimedes Plutonium whole entire Universe is just one big atom where dots of the electron-dot-cloud are galaxies Mike, don't be too hard on Archie. He is our pet idiot. Franz |
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hottest part of Sun and hottest part of a fireplace question &observation
Archimedes Plutonium wrote:
Now I am not sure of my observation that the only blue flame is near the outer topmost edge of the spent log. Blue near the top surface, more reddish below the blue and then almost white in the middle. That is what I see but perhaps my sight is at fault. Now with the Sun, if I have it correct near the surface is the hottest part of the Sun. that is incorrect. look it up. db |
#5
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hottest part of Sun and hottest part of a fireplace question & observation
"Franz Heymann" wrote in message ... "Mike Dworetsky" wrote in message ... "Archimedes Plutonium" wrote in message om... Now I am not sure of my observation that the only blue flame is near the outer topmost edge of the spent log. Blue near the top surface, more reddish below the blue and then almost white in the middle. That is what I see but perhaps my sight is at fault. Now with the Sun, if I have it correct near the surface is the hottest part of the Sun. Such a great amount of speculation from such a totality of ignorance, eh? If you are referring to the photosphere, the "surface" is the coolest part of the Sun, not the hottest. So my question is why the blue, and the blue is the hottest, why the blue in a log fireplace on the surface of the log? Is it because the density of oxygen is greatest near the surface whereas going inside the spent log less oxygen and thus not as hot. Blue isn't necessarily the hottest part of a flame. The colours in a flame are due to chemical reactions during combustion, not radiative transfer through a hot medium. The red or orange glow of a burning log is thermal or blackbody radiation, however. If oxygen density is the answer for why blueflame on top surface, then what is the answer for the Sun as to why its outer layer is the hottest? My mind would like to say it is also a matter of *oxygen density* greatest on the outer surfaces of the Sun but not sure if that is the case. The Sun is not combusting or burning like a fire; you really ought to learn some basics before posting. Does an expert on the Sun want to weigh in. Archimedes Plutonium whole entire Universe is just one big atom where dots of the electron-dot-cloud are galaxies Mike, don't be too hard on Archie. He is our pet idiot. Franz That's what Donald Rumsfeld would describe as a known known. Just thought I would head off an AP thread before he really took off with it. Thanks for reminding me... -- Mike Dworetsky (Remove "pants" spamblock to send e-mail) |
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hottest part of Sun and hottest part of a fireplace question & observation
In sci.physics, Archimedes Plutonium
wrote on 26 Jan 2004 23:23:57 -0800 : Now I am not sure of my observation that the only blue flame is near the outer topmost edge of the spent log. Blue near the top surface, more reddish below the blue and then almost white in the middle. That is what I see but perhaps my sight is at fault. Now with the Sun, if I have it correct near the surface is the hottest part of the Sun. So my question is why the blue, and the blue is the hottest, why the blue in a log fireplace on the surface of the log? Is it because the density of oxygen is greatest near the surface whereas going inside the spent log less oxygen and thus not as hot. If oxygen density is the answer for why blueflame on top surface, then what is the answer for the Sun as to why its outer layer is the hottest? My mind would like to say it is also a matter of *oxygen density* greatest on the outer surfaces of the Sun but not sure if that is the case. Does an expert on the Sun want to weigh in. Archimedes Plutonium whole entire Universe is just one big atom where dots of the electron-dot-cloud are galaxies Power output of entire sun: 3.94 * 10^26 W Mass of sun: 1.9862 * 10^30 kg C + O2 = CO2 enthalpy: -643 kJ/mol or 14.6 MJ/kg Fuel consumption rate, assuming C + O2 reaction: 2.69*10^19 kg/s Time of life assuming C + O2: 2340 years Probability this scenario makes any sense: 0 Actual hydrogen consumption rate: 6*10^11 kg/s Actual hydrogen percentage: 92% Time of life assuming pure H fusion and constant rate: 96.5 billion years Actual estimated time of life: 5 billion years Estimated time before Earth becomes inhabitable: 1 billion years -- #191, It's still legal to go .sigless. |
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