|
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Absorption lines are unaffected by Doppler shift.
Henri Wilson wrote:
I take that to mean you have no evidence that IR comes from the same layer as visible. Henri, 1) How big does the Sun look in visible light? 2) How big does the Sun look in IR light? 3) How big does the Sun look in UV light? 4) How big does the Sun look at radio frequencies? Jerry |
#2
|
|||
|
|||
Absorption lines are unaffected by Doppler shift.
"Jerry" wrote in message oups.com... Henri Wilson wrote: I take that to mean you have no evidence that IR comes from the same layer as visible. Henri, 1) How big does the Sun look in visible light? 2) How big does the Sun look in IR light? 3) How big does the Sun look in UV light? 4) How big does the Sun look at radio frequencies? 5) How big does the Sun look in X_rays? Dirk Vdm |
#3
|
|||
|
|||
Absorption lines are unaffected by Doppler shift.
Dirk Van de moortel wrote: "Jerry" wrote in message oups.com... Henri Wilson wrote: I take that to mean you have no evidence that IR comes from the same layer as visible. Henri, 1) How big does the Sun look in visible light? 2) How big does the Sun look in IR light? 3) How big does the Sun look in UV light? 4) How big does the Sun look at radio frequencies? 5) How big does the Sun look in X_rays? Watch Henri invent another eponymous law to explain why our observations of the Sun aren't relevant... Jerry |
#4
|
|||
|
|||
Absorption lines are unaffected by Doppler shift.
On 26 Oct 2005 05:06:09 -0700, "Jerry" wrote:
Dirk Van de moortel wrote: "Jerry" wrote in message oups.com... Henri Wilson wrote: I take that to mean you have no evidence that IR comes from the same layer as visible. Henri, 1) How big does the Sun look in visible light? 2) How big does the Sun look in IR light? 3) How big does the Sun look in UV light? 4) How big does the Sun look at radio frequencies? 5) How big does the Sun look in X_rays? Watch Henri invent another eponymous law to explain why our observations of the Sun aren't relevant... I don't think we can judge the whole universe by our local knowledge of it. For instance even an SRian wouldn't use the sun as a model for one of their imaginary cepheids? Jerry HW. www.users.bigpond.com/hewn/index.htm see: www.users.bigpond.com/hewn/variablestars.exe "Sometimes I feel like a complete failure. The most useful thing I have ever done is prove Einstein wrong". |
#5
|
|||
|
|||
Absorption lines are unaffected by Doppler shift.
"Henri Wilson" HW@.. wrote in message ... | I don't think we can judge the whole universe by our local knowledge of it. For | instance even an SRian wouldn't use the sun as a model for one of their | imaginary cepheids? Blackwell Synergy: Monthly Notices RAS, Vol 0, Issue 0: Sun's ... "The Sun wobbles about the Solar system barycentre with the distance varying up to two times its radius." - (RAS - Royal Astronomical Society) The sun is an irregular cepheid with a period of 4330 days when seen from M31. FYI, H, this is well thought-out applet. http://www.astro.wisc.edu/~dolan/con...rsa_Major.html http://www.astro.uiuc.edu/~kaler/sow/mizar.html "MIZAR (Zeta Ursae Majoris). One of the most famed stars of the sky, second magnitude (2.27) Mizar, 78 light years away, is the Zeta star of Ursa Major, the Greater Bear, the second star in from the end of the handle of the Big Dipper, and the Dipper's fourth brightest star. In large part its fame comes from the coupling of the star with a nearby visual companion, fourth magnitude Alcor, only 12 minutes of arc (a fifth of a degree) to the northeast. The two, Mizar and Alcor, termed the "horse and rider" by the Arabians, are a good test of minimal vision. The star's Arabic name derives from a word meaning "the groin" of the celestial Bear that plods silently around the north celestial pole (the name mistakenly drawn from Merak, in the Dipper's bowl). However even without Alcor, Mizar takes its place in the celestial hall of fame as the first known "double star," one that consists of a pair of stars that orbit each other. Found to be double in 1650, Mizar is a prime target for someone with a new telescope, as the components are an easy 14 seconds of arc apart (at least 500 astronomical units), the two taking at least 5000 years to make their orbit about each other. More remarkably, each of these two components is AGAIN double. The brighter of the two contains a very close pair a mere 7 or 8 thousandths of a second of arc apart (an angle made by a penny at a distance of 300 miles) that has an orbital period of 20.5 days; the fainter of them contains a pair with a period of about half a year. Mizar is thus actually a quartet of stars, a double-double. It is moving through space together with its more-distant companion, Alcor. Mizar and Alcor together therefore probably make a quintuple star, Alcor taking at least 750,000 years to make a single round trip around its quadruple companion. All of the stars are similar, all "main sequence" hydrogen-fusing stars like the Sun, but of white class A (the brighter both A2, the fainter probably both A5 or A7) with temperatures ranging between around 7500 and 9000 degrees Kelvin and luminosities from 10 to 30 times solar. The orbit of the brighter double that makes Mizar has been observed with a sophisticated "interferometer" that makes use of the interfering properties of light. Analysis shows the component stars to have masses 2.5 times that of the Sun; the masses of the fainter pair are estimated at around 1.6 solar. The stars have odd chemical abundances as a result of slow rotation, which allows for quiet atmospheres and chemical separation. The brighter of the pair seen through the telescope is rich in silicon and strontium, whereas the fainter is a "metallic line star" that is deficient in aluminum and calcium but high in silicon and in rare earths like cerium and samarium. " http://www.uwgb.edu/dutchs/planets/resonanc.htm Chaos does not mean: Events are not governed by laws of nature. Chaos does mean: Events are governed by the laws of nature but their behavior is too complex for simple description. Chaos does not mean: Events are random or unpredictable. Chaos does mean: Events may be predictable in the short term but not over arbitrarily long times. Small errors at the start of a prediction compound later on into great differences. Chaos does not mean: Chaotic systems are unstable and will eventually fall apart (the Jurassic Park Fallacy) Chaos does mean: Chaotic systems may remain within fixed bounds but their behavior within those bounds may be hard to predict. Wilson half spirals (WHS) are chaotic. Wilson program-writing rating: One Brewery. Androcles. |
#6
|
|||
|
|||
Absorption lines are unaffected by Doppler shift.
"Jerry" wrote in message oups.com... Dirk Van de moortel wrote: "Jerry" wrote in message oups.com... Henri Wilson wrote: I take that to mean you have no evidence that IR comes from the same layer as visible. Henri, 1) How big does the Sun look in visible light? 2) How big does the Sun look in IR light? 3) How big does the Sun look in UV light? 4) How big does the Sun look at radio frequencies? 5) How big does the Sun look in X_rays? Watch Henri invent another eponymous law to explain why our observations of the Sun aren't relevant... He will probably say something silly like for instance: "I don't think we can judge the whole universe by our local knowledge of it." ;-) Dirk Vdm |
#7
|
|||
|
|||
Absorption lines are unaffected by Doppler shift.
Dirk Van de moortel wrote:
"Jerry" wrote in message oups.com... Dirk Van de moortel wrote: "Jerry" wrote in message oups.com... Henri Wilson wrote: I take that to mean you have no evidence that IR comes from the same layer as visible. Henri, 1) How big does the Sun look in visible light? 2) How big does the Sun look in IR light? 3) How big does the Sun look in UV light? 4) How big does the Sun look at radio frequencies? 5) How big does the Sun look in X_rays? Watch Henri invent another eponymous law to explain why our observations of the Sun aren't relevant... He will probably say something silly like for instance: "I don't think we can judge the whole universe by our local knowledge of it." ;-) Dirk Vdm If Henri had ANY knowledge of solar physics, he would have caught you on X-rays. The photosphere is very dim in X-rays. http://science.msfc.nasa.gov/ssl/pad/solar/corona.htm He didn't correct you, which just goes to show how totally ignorant he is. Jerry |
#8
|
|||
|
|||
Absorption lines are unaffected by Doppler shift.
"Jerry" wrote in message ups.com... Dirk Van de moortel wrote: "Jerry" wrote in message oups.com... Dirk Van de moortel wrote: "Jerry" wrote in message oups.com... Henri Wilson wrote: I take that to mean you have no evidence that IR comes from the same layer as visible. Henri, 1) How big does the Sun look in visible light? 2) How big does the Sun look in IR light? 3) How big does the Sun look in UV light? 4) How big does the Sun look at radio frequencies? 5) How big does the Sun look in X_rays? Watch Henri invent another eponymous law to explain why our observations of the Sun aren't relevant... He will probably say something silly like for instance: "I don't think we can judge the whole universe by our local knowledge of it." ;-) Dirk Vdm If Henri had ANY knowledge of solar physics, he would have caught you on X-rays. The photosphere is very dim in X-rays. http://science.msfc.nasa.gov/ssl/pad/solar/corona.htm Ah yes, since the photosphere is *much* cooler than the corona. I should have thought of that one. For my defense, I can say that my course on Stellar Internals and Atmospheres happened 27 years ago... pages and pages and pages covering one single equation - horrible ;-) He didn't correct you, which just goes to show how totally ignorant he is. Thanks for correcting me :-) Cheers, Dirk Vdm |
#9
|
|||
|
|||
Absorption lines are unaffected by Doppler shift.
Androcles wrote:
Blackwell Synergy: Monthly Notices RAS, Vol 0, Issue 0: Sun's ... "The Sun wobbles about the Solar system barycentre with the distance varying up to two times its radius." - (RAS - Royal Astronomical Society) The sun is an irregular cepheid with a period of 4330 days when seen from M31. I see your knowledge of Cepheids is like your knowledge of physics, Androcles. :-) Paul |
#10
|
|||
|
|||
Absorption lines are unaffected by Doppler shift.
Dirk Van de moortel wrote:
"Jerry" wrote in message ups.com... Dirk Van de moortel wrote: "Jerry" wrote in message oups.com... Dirk Van de moortel wrote: "Jerry" wrote in message oups.com... Henri Wilson wrote: I take that to mean you have no evidence that IR comes from the same layer as visible. Henri, 1) How big does the Sun look in visible light? 2) How big does the Sun look in IR light? 3) How big does the Sun look in UV light? 4) How big does the Sun look at radio frequencies? 5) How big does the Sun look in X_rays? Watch Henri invent another eponymous law to explain why our observations of the Sun aren't relevant... He will probably say something silly like for instance: "I don't think we can judge the whole universe by our local knowledge of it." ;-) Dirk Vdm If Henri had ANY knowledge of solar physics, he would have caught you on X-rays. The photosphere is very dim in X-rays. http://science.msfc.nasa.gov/ssl/pad/solar/corona.htm Ah yes, since the photosphere is *much* cooler than the corona. I should have thought of that one. For my defense, I can say that my course on Stellar Internals and Atmospheres happened 27 years ago... pages and pages and pages covering one single equation - horrible ;-) He didn't correct you, which just goes to show how totally ignorant he is. Thanks for correcting me :-) Cheers, Dirk Vdm I think this discussion started with my claim that all the radiation comes from the photosphere. This is obviously not strictly true. What I meant (and also said, but didn't repeat every time) is that all the black body radiation comes from the same layer - the photosphere. This is rather obvious - the black body radiation comes from the part of the star which is dense enough to act as a "body" and emit a continuous spectrum. Deeper layers are not transparent. The 10um IR radiation is part of the black body radiation like visible light is. But radio frequencies and X-rays are not. Paul |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Absorption lines are unaffected by Doppler shift. | Jerry | Misc | 17 | July 4th 06 11:04 AM |
Absorption lines are unaffected by Doppler shift. | [email protected] | Misc | 2 | October 20th 05 09:44 AM |
Absorption lines are unaffected by Doppler shift. | [email protected] | UK Astronomy | 2 | October 20th 05 09:44 AM |
Absorption lines are unaffected by Doppler shift. | has.mac | Misc | 0 | October 15th 05 07:18 PM |
Absorption lines are unaffected by Doppler shift. | has.mac | UK Astronomy | 0 | October 15th 05 07:18 PM |