#51
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Star Distances
Utter nonsense.... http://www.kingcards.com/htdocs/friends/shakin.htm The linear acceleration of a body moving in a gravitationa field is independent both on the mass of the object and on the spin rate of the object. You're using your language very imprecisely. That may be true in a two-body system on a point (uniform) mass, but we are not talking about that. You are decomposing a much more complicated SYSTEM and applying fundamental rules incompletely. The solar system consists of the "internal" components of the Sun and planets, primarily, each with their own velocities, internal forces, and angular momentums. You are simplistically applying rules on one of its "internal" components by an "external" force in determining a relative internal change of motion or translation, namely Earth's orbit. All internal energies and momentums of the solar system must be conserved therefore how the Earth reacts to an external force does indeed depend on such things as angular momentum. Learn some fundamental mechanics, will you? Apparently not... :-( Not only have I reviewed my mechanics, I'm looking over a book on Astrodynamics. That is "rocket science". |
#52
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Star Distances
On 10/7/06 21:26, in article , "George Dishman" wrote: So in the chapter that covers Newtonian mechanics does it say f=ma or does it have some alternative that includes angular momentum? Paul's statement is quite clear and perfectly correct, it is your handwaving and use of ambiguous terms like 'gyrate' that is imprecise and ultimately wrong. George I killfiled hurt a long while ago. It is patently obvious he is trolling - that's why he posts to alt.conspiracy as well. His stupidity is too intense not to be deliberate... -- Relf's Law? -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ "Bull**** repeated to the limit of infinity asymptotically approaches the odour of roses." Corollary -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ ³It approaches the asymptote faster, the more pseduos¹ you throw in your formulas.² -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ ³Gravity is one of the four fundamental interactions. The classical theory of gravity - Einstein's general relativity - is the subject of this book.² : Hartle/ Gravity pg 1 -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ Jaffa cakes. Sweet delicious orange jaffa goodness, and an abject lesson why parroting information from the web will not teach you cosmology. -+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ |
#53
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Star Distances
"Hurt" wrote in message oups.com... Utter nonsense.... http://www.kingcards.com/htdocs/friends/shakin.htm The linear acceleration of a body moving in a gravitationa field is independent both on the mass of the object and on the spin rate of the object. You're using your language very imprecisely. That may be true in a two-body system on a point (uniform) mass, but we are not talking about that. You are decomposing a much more complicated SYSTEM and applying fundamental rules incompletely. The solar system consists of the "internal" components of the Sun and planets, primarily, each with their own velocities, internal forces, and angular momentums. You are simplistically applying rules on one of its "internal" components by an "external" force in determining a relative internal change of motion or translation, namely Earth's orbit. All internal energies and momentums of the solar system must be conserved therefore how the Earth reacts to an external force does indeed depend on such things as angular momentum. Learn some fundamental mechanics, will you? Apparently not... :-( Not only have I reviewed my mechanics, I'm looking over a book on Astrodynamics. That is "rocket science". So in the chapter that covers Newtonian mechanics does it say f=ma or does it have some alternative that includes angular momentum? Paul's statement is quite clear and perfectly correct, it is your handwaving and use of ambiguous terms like 'gyrate' that is imprecise and ultimately wrong. George |
#54
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Star Distances
"Phineas T Puddleduck" wrote in message m_NOSPAM... I killfiled hurt a long while ago. It is patently obvious he is trolling - that's why he posts to alt.conspiracy as well. His stupidity is too intense not to be deliberate... I'm not so sure, he dropped his argument of stellar distances being wrong when he learned of Hipparcos and the facts that gravitational bending has already been taken into account and for a layman to be unaware of Hipparcos or the accuracy which has been achieved in measuring nearby star distances in the last few decades doesn't surprise me in the least. I think he's just a believer in the 'Nemesis' concept looking for ways to make it still be credible in the face of recent technological advances. In fact I think if you told the average member of the public that we can measure movement of distant stars to a few metres per second, many would laugh at you, but they also know we have found extra-solar planets. George |
#55
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Star Distances
or not. The centre of momentum (you might know it as 'centre of gravity') is accelerated at exactly the same rate regardless. The center of mass of a rigid body is its center of LINEAR momentum but not its center of ANGULAR momentum. Angular momentum exists about an axis of rotation (or revolution) which may or may not pass through a body's center of mass. http://en.wikipedia.org/wiki/Moment_of_inertia Also, the center of mass of a rigid body is not exactly its center of gravity since any body has extent therefore one side will be closer to a gravity field producing mass than the other side. |
#56
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Star Distances
I killfiled hurt a long while ago. It is patently obvious he is trolling - Yet you keep coming back. |
#57
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Star Distances
So in the chapter that covers Newtonian mechanics does it say f=ma or does it have some alternative that includes angular momentum? The Descent of Man?...! Here's another one of those BIG surprises on a topic I never pay much attention to. [gear shift] I thought you're in the UK, how are you becoming aware of my traffic? Paul's statement is quite clear and perfectly correct, So is mine. Let me "boil it down" some and state it again. You're suggesting that to detect an external [to our solar system] gravitational perturbation by a large nearby object we measure some simplistic orbital change due to a linear acceleration, when the entire solar system is experiencing the same acceleration? What are we going to use as a reference? The best, if not the only, way to detect this would be to measure the relative affects on the planets due precisely to their different angular momentums; especially the larger planets. it is your handwaving and use of ambiguous terms like 'gyrate' that is imprecise and ultimately wrong. I'll admit I've been somewhat incomplete, but no more so than any of you people. |
#58
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Star Distances
I'm not so sure, he dropped his argument of stellar
distances being wrong when he learned of Hipparcos Oh I think most of these cosmological speculations ("theories") are wrong. There most likely are stars that are much closer. Close enough for us to reach with present technology. I think he's just a believer in the 'Nemesis' concept looking for ways to make it still be credible in the face of recent technological advances. ? I have no reason to believe or not to believe in a 'Nemesis' concept, but based on what I've just briefly investigated it does seem likely that there is some relatively large nearby gravitational object that makes a pass at us every once in a while. but they also know we have found extra-solar planets. Due to wobble! |
#59
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Star Distances
On 10 Jul 2006 15:09:57 -0700, "Hurt"
Gave us: I killfiled hurt a long while ago. It is patently obvious he is trolling - Yet you keep coming back. Yeah, but he is not reading your posts, you retarded troll dumb****. |
#60
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Star Distances
On 10 Jul 2006 18:18:47 -0700, "Hurt"
Gave us: Oh I think most of these cosmological speculations ("theories") are wrong. There most likely are stars that are much closer. Close enough for us to reach with present technology. You're a goddamned retard. |
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