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Date: 02 Sep 2007 08:56:51
From: oriel36
Subject: Kepler ,Newton and orbital geometry
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The Wikipedia article is being quite honest but the chain of reasoning Newton applied to Keplerian orbits are technically present and can be dealt with easily,at least for people who are familiar with astronomical methods - "Newton's actual historical chain of reasoning is not known with certainty, because in his writing he tended to erase any traces of how he had reached his conclusions." Kepler's third law http://en.wikipedia.org/wiki/Kepler's_laws_of_planetary_motion 'PH=C6NOMENON IV.' "That the fixed stars being at rest, the periodic times of the five primary planets, and (whether of the sun about the earth, or) of the earth about the sun, are in the sesquiplicate proportion of their mean distances from the sun. This proportion, first observed by Kepler, is now received by all astronomers; for the periodic times are the same, and the dimensions of the orbits are the same, whether the sun revolves about the earth, or the earth about the sun." http://members.tripod.com/~gravitee/phaenomena.htm Rather than go through the details,and they are intricate,perhaps it is best to demonstrate why it is neccessary to revisit the explanation for Keplerian orbital geometries and how the late 17th century shortcuts creates multiple problems elsewhere such as the pressing need to modify the cause for the seasons by concentrating on the orbital motion of the Earth and Keplerian orbital geometry.
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Date: 07 Sep 2007 09:50:42
From: oriel36
Subject: Re: Kepler ,Newton and orbital geometry
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On Sep 7, 1:00 pm, Quadibloc <jsav...@ecn.ab.ca > wrote: > oriel36 wrote: > > On Sep 7, 4:23 am, Quadibloc <jsav...@ecn.ab.ca> wrote: > > > They don't need to fight. They're free to hop to a Galactic center > > > frame any time they need to. > > It is for dynamicists to decide whether to revist Keplerian orbital > > geometries with an eye to other physical considerations such as the > > 'ice age' cycles from climatology and geology rather than be slaves > > to the zodiacal framework which Newton built on.They are not free and > > never will be free so long as that awful error created by Flamsteed > > remains but for my part,it is not really my business what they do and > > believe among themselves ,it is their problem to deal with. > > But I should also have added that if they don't have the use of the > law of universal gravitation any longer, it doesn't matter what > reference frame they hop to, they will not be able to do anything when > they get there. Except passively observe. > > If Newton's law of gravity were giving them wrong answers, they would > take action. And, indeed, the contribution of the General Theory of > Relativity to the understanding of the motions of Mercury is accepted > and appreciated. > The guys in the middle of the 19th century struggled to escape Newton's framework but could not recognise the zodiacal framewwork at its core,the efforts of Mach to determine absolute/relative definitions as rubbish also failed for the same reasons that nobody understood what they meant. I have taught the dynanicists exactly what absolute/relative means in terms of retrogrades and their resolution and there is nothing I can do about it if they wish to remain in a celestial sphere framework.I have been explicit that it is a matter for them to decide in their own way how to progress even if it is extremely rude to not recognise the effort involved in removing the Newtonian nonsense. This business of making a huge effort while encountering halfwits like yourself is done,the open forum has always been great through history for thrashing out ideas and what they mean,especially the modern usenet forums,but ultimately the channels for productive work are still through the educational network.That the educational network is dominated by numbskulls when it comes to astronomy makes the effort through the forums the only possible way but I have had enough of trying to appeal to genuine and honest people for a while and besides it does take an enormous toll. > > God forbid any of you had to bear the stress of trying to promote the > > achievements of timekeeping and structural astronomers and discover > > that nobody wants to hear what they have to say but that is what all > > this has amounted to.Not one of you will click on the link showing > > Huygens treatise and what can I do beyond that - > > >http://www.xs4all.nl/~adcs/Huygens/06/kort-E.html > > I did follow that link, but although I read what was there, I could > not see how it presented a different way to understand the heavens. > > John Savard http://www.xs4all.nl/~adcs/Huygens/06/kort-E.html Anybody who makes the effort to appreciate the Equation of Time system,its relationship between the axial cycle and terrestrial longitudes would never have faulted my effort to expunge the incredibly silly error in attaching axial rotation to the return of a star in 23 hours 56 minutes 04 seconds.That work is a jewel of my astronomical heritage and to see no object is far more heartbreaking than the joy of watching an astronomical master like Huygens at work. I had the respoinsibility of presenting the genuine 243 hours/360 degree principles and not to see them cut to pieces by halfwits who believe in a silly alternative value with its own idiosyncratic methods - http://hypertextbook.com/facts/1999/JennyChen.shtml Whatever victory there is in remaining silent on a terrible ,terrible situation I do not know but that is the way it has ended up,at least so far.
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Date: 07 Sep 2007 08:55:48
From: oriel36
Subject: Re: Kepler ,Newton and orbital geometry
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On Sep 7, 1:00 pm, Quadibloc <jsav...@ecn.ab.ca > wrote: > oriel36 wrote: > > On Sep 7, 4:23 am, Quadibloc <jsav...@ecn.ab.ca> wrote: > > > They don't need to fight. They're free to hop to a Galactic center > > > frame any time they need to. > > It is for dynamicists to decide whether to revist Keplerian orbital > > geometries with an eye to other physical considerations such as the > > 'ice age' cycles from climatology and geology rather than be slaves > > to the zodiacal framework which Newton built on.They are not free and > > never will be free so long as that awful error created by Flamsteed > > remains but for my part,it is not really my business what they do and > > believe among themselves ,it is their problem to deal with. > > But I should also have added that if they don't have the use of the > law of universal gravitation any longer, it doesn't matter what > reference frame they hop to, they will not be able to do anything when > they get there. Except passively observe. > > If Newton's law of gravity were giving them wrong answers, they would > take action. And, indeed, the contribution of the General Theory of > Relativity to the understanding of the motions of Mercury is accepted > and appreciated. > > > God forbid any of you had to bear the stress of trying to promote the > > achievements of timekeeping and structural astronomers and discover > > that nobody wants to hear what they have to say but that is what all > > this has amounted to.Not one of you will click on the link showing > > Huygens treatise and what can I do beyond that - > > >http://www.xs4all.nl/~adcs/Huygens/06/kort-E.html > > I did follow that link, but although I read what was there, I could > not see how it presented a different way to understand the heavens. > > John Savard 'Period Of Rotation' "The actual value is 23 hours, 56 minutes and 4 seconds. This is the length of a "sidereal" day. It is the actual time it takes the Earth to rotate 360 degrees. The term "sidereal" (pronounced sigh-dear'- real) refers to the rotation of the Earth being measured relative to the stars. There ARE 24 hours in a "solar day". This is the time it takes from one noon (sun overhead) to the next noon. The difference in the two "days" arises from the fact that during a day the Earth also travels nearly a degree further on its yearly trek around the Sun. " http://liftoff.msfc.nasa.gov/academy/rocket_sci/orbmech/period.html http://hypertextbook.com/facts/1999/JennyChen.shtml This is a Nasa website,it is the same in every reference book and all trying to make the fictional difference between 'solar time and sidereal time fit,try the NNM where the clocks of Harrison reside - http://www.nmm.ac.uk/server/show/nav.3116 What are you doing to yourselves ? the actual principles which keeps clocks in sync with the axial cycle are lovely and easy to understand as a facet of heliocentric reasoning - http://www.xs4all.nl/~adcs/Huygens/06/kort-E.html I will say this for the last time,I thought with the treatise of Huygens showing how clocks,the axial cycle and terrestrial longitudes mesh that you empirical cult was finally in trouble with this 'sidereal time/solar time ' hoax,it turns out that I am in trouble in terms of the unfolding horror in watching nobody support the most basic astronomical fact of all in terms of clocks and axial rotation. These people in s.a.a now belong to you.
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Date: 07 Sep 2007 05:00:18
From: Quadibloc
Subject: Re: Kepler ,Newton and orbital geometry
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oriel36 wrote: > On Sep 7, 4:23 am, Quadibloc <jsav...@ecn.ab.ca> wrote: > > They don't need to fight. They're free to hop to a Galactic center > > frame any time they need to. > It is for dynamicists to decide whether to revist Keplerian orbital > geometries with an eye to other physical considerations such as the > 'ice age' cycles from climatology and geology rather than be slaves > to the zodiacal framework which Newton built on.They are not free and > never will be free so long as that awful error created by Flamsteed > remains but for my part,it is not really my business what they do and > believe among themselves ,it is their problem to deal with. But I should also have added that if they don't have the use of the law of universal gravitation any longer, it doesn't matter what reference frame they hop to, they will not be able to do anything when they get there. Except passively observe. If Newton's law of gravity were giving them wrong answers, they would take action. And, indeed, the contribution of the General Theory of Relativity to the understanding of the motions of Mercury is accepted and appreciated. > God forbid any of you had to bear the stress of trying to promote the > achievements of timekeeping and structural astronomers and discover > that nobody wants to hear what they have to say but that is what all > this has amounted to.Not one of you will click on the link showing > Huygens treatise and what can I do beyond that - > > http://www.xs4all.nl/~adcs/Huygens/06/kort-E.html I did follow that link, but although I read what was there, I could not see how it presented a different way to understand the heavens. John Savard
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Date: 07 Sep 2007 04:15:43
From: oriel36
Subject: Re: Kepler ,Newton and orbital geometry
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On Sep 7, 4:23 am, Quadibloc <jsav...@ecn.ab.ca > wrote: > oriel36 wrote: > > The forward motion of the Sun may influence heliocentric > > orbital geometry from that perspective which is why dynamicists should > > be fighting tooth and nail to get out of the 'fixed stars' > > astrological framework Newton locked them into. > > They don't need to fight. They're free to hop to a Galactic center > frame any time they need to. > > John Savard It is for dynamicists to decide whether to revist Keplerian orbital geometries with an eye to other physical considerations such as the 'ice age' cycles from climatology and geology rather than be slaves to the zodiacal framework which Newton built on.They are not free and never will be free so long as that awful error created by Flamsteed remains but for my part,it is not really my business what they do and believe among themselves ,it is their problem to deal with. I do mind that honest people can stay quiet on the matter of a basic fact which created so many practical and astronomical uses .A star returning in 23 hours 56 minutes 04 seconds demonstrates the incredible usefullness of the calendar system or the observational convenience of the Ra/Dec system but nothing else and certainly not justifying axial and orbital motion.Isolating axial rotation from variations in orbital motion has never been done and you cannot do it without first recognising how clocks,the axial cycle and terrestrial longitudes mesh as a stable system,that it is fairly easy to grasp is what makes all this heartbreaking,that good people would choose to ignore it and adopt an alternative view. God forbid any of you had to bear the stress of trying to promote the achievements of timekeeping and structural astronomers and discover that nobody wants to hear what they have to say but that is what all this has amounted to.Not one of you will click on the link showing Huygens treatise and what can I do beyond that - http://www.xs4all.nl/~adcs/Huygens/06/kort-E.html
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Date: 06 Sep 2007 20:23:30
From: Quadibloc
Subject: Re: Kepler ,Newton and orbital geometry
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oriel36 wrote: > The forward motion of the Sun may influence heliocentric > orbital geometry from that perspective which is why dynamicists should > be fighting tooth and nail to get out of the 'fixed stars' > astrological framework Newton locked them into. They don't need to fight. They're free to hop to a Galactic center frame any time they need to. John Savard
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Date: 05 Sep 2007 04:53:05
From: oriel36
Subject: Re: Kepler ,Newton and orbital geometry
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On Sep 4, 1:31 pm, Quadibloc <jsav...@ecn.ab.ca > wrote: > oriel36 wrote: > > In the end you are just another empiricist giving yourself a choice > > Oncve you give yourself the choice or develop the jargon of 'reference > > frames' you develop thinking that is alien to astronomical methods and > > insights.You develop ideas like the reference frame of the Earth ,the > > Sun returns to noon in 24 hours and the stars return in 23 hours 56 > > minutes 04 seconds therefore orbital motion must explain the > > difference between the two - > > >http://liftoff.msfc.nasa.gov/academy/rocket_sci/orbmech/period.html > > It is Newton's manner of building on that > > framework that has cost humanity so much and especially in this era > > when climatological concerns require an immediate effort to understand > > what is going on and it is here that the 'frames of reference ' jargon > > costs so much. > > Thinking of a compound motion in terms of individual simple motions, > and starting from the state of motion which best permits the compound > motions to be disentangled, is not a "choice" except as one chooses to > allow the necessary calculations to determine motions to be freed from > needless and unnecessary complication. > > John Savard You see John,despite all the choices you can give yourselves (that was all taken care off by permitting 'framehopping') you still are trapped inside the astrological framework of Flamsteed,whether you know it or not or care to know it or not.I enjoy the freedom of considering compound orbital motions as affecting orbital geometries or galactic structure - just like the shape of a hurricane is supplied by a greater rotation acting on a localised system - http://www.etymonline.com/columns/hurricane-galaxy.jpg For all the arbitrary choices you allow yourselves,it turns out that you are bound to conclusions based on a limiting framework,specifically the celestial sphere framework .You have to invent ' dark matter' to keep galactic structure and invent 'dark energy' to explain what you see as something else. I am content to allow greater cycles speak for themselves and then consider how compound motions influences things like heliocentric orbital geometries and structures such as Galaxies by moving up and down in cyclical scale. Insofar as Newton's attempt to apply terrestrial ballistics to planetary motion is valid,he was working off zodiacal geometry and that's what makes it limiting and unhealthy. On a seperate matter . I read an interesting article on sporgery in Wiki yesterday and its historical roots - http://en.wikipedia.org/wiki/Sporgery I still have to make up my own mind on this matter but it will take some time.
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Date: 05 Sep 2007 02:47:39
From: oriel36
Subject: Re: Kepler ,Newton and orbital geometry
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On Sep 5, 7:17 am, "Peter Webb" <webbfam...@DIESPAMDIEoptusnet.com.au > wrote: > > "Cor. 2. And since these stars are liable to no sensible parallax from > > the annual motion of the earth, they can have no force, because of > > their immense distance, to produce any sensible effect in our system. > > Not to mention that the fixed stars, every where promiscuously > > dispersed in the heavens, by their contrary actions destroy their > > mutual actions, by Prop. LXX, Book I." > > What is wrong with that statement? It looks perfectly fine to me. > No doubt you never heard that stars are organised and move around a central point - http://www.badastronomy.com/pix/bablog/2006/ngc1309.jpg > > That is the way people would looked at the solar system and the other > > stars until the middle of the 1920's > > And its still how people look at the solar system, unless they are looking > for the 6th or 7th decimal place in the precession of Mercury's orbit. > So I have noticed,the fact is that the framework on which Newton built his agenda is not a willy nilly scattering of stars but rather an astrological one - http://www.opencourse.info/astronomy/introduction/02.motion_stars_sun/celestial_sphere_anim.gif You want to justify the axial and orbital motion of the Earth using the return of a star and that is what you get. > >but grow up,we are involved in > > compound orbital motions and it is time to take that motion into > > account rather than stick with localised solutions. > > What motion? What motion indeed !. The Sun has a forward motion along with the rest of the Milky Way stars in one direction around a central axis so that the planets of the solar system spend months travelling in the direction of Galactic orbital motion with the Sun and months travelling in the opposite direction.The forward motion of the Sun may influence heliocentric orbital geometry from that perspective which is why dynamicists should be fighting tooth and nail to get out of the 'fixed stars' astrological framework Newton locked them into.
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Date: 04 Sep 2007 05:31:55
From: Quadibloc
Subject: Re: Kepler ,Newton and orbital geometry
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oriel36 wrote: > In the end you are just another empiricist giving yourself a choice > Oncve you give yourself the choice or develop the jargon of 'reference > frames' you develop thinking that is alien to astronomical methods and > insights.You develop ideas like the reference frame of the Earth ,the > Sun returns to noon in 24 hours and the stars return in 23 hours 56 > minutes 04 seconds therefore orbital motion must explain the > difference between the two - > > http://liftoff.msfc.nasa.gov/academy/rocket_sci/orbmech/period.html > It is Newton's manner of building on that > framework that has cost humanity so much and especially in this era > when climatological concerns require an immediate effort to understand > what is going on and it is here that the 'frames of reference ' jargon > costs so much. Thinking of a compound motion in terms of individual simple motions, and starting from the state of motion which best permits the compound motions to be disentangled, is not a "choice" except as one chooses to allow the necessary calculations to determine motions to be freed from needless and unnecessary complication. John Savard
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Date: 04 Sep 2007 03:23:28
From: oriel36
Subject: Re: Kepler ,Newton and orbital geometry
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On Sep 4, 7:17 am, Margo Schulter <mschul...@web1.calweb.com > wrote: > Anyway, I don't see why we can't approach the idea of a heliocentric Solar > System and planetary motions in more than one way: either using modern > imaging to illustrate Kepler's explanation of apparent retrograde motion, > or using Newton's heliocentric reference frame (to me, a fine thought > experiment). We're hardly limited to one frame of reference, and I'd > consider it elegant to use two or more, rather like having alternative > proofs for a theorem of whatever. > > Most appreciatively, > > Margo Schulter > mschul...@calweb.com > Lat. 38.566 Long. -121.430 In the end you are just another empiricist giving yourself a choice you do not have.the physical considerations involved in explaining apparent retrogrades by using the orbital motion of the Earth between Venus and Mars to account for the observed behavior directly leads to the physical conclusioon that axial rotation causes the daily cycle.From there you witness the enormous advance where the Equation of Time system was adapted to the axial cycle and terrestrial longitudes as a 24 hour/360 degree correlation. Oncve you give yourself the choice or develop the jargon of 'reference frames' you develop thinking that is alien to astronomical methods and insights.You develop ideas like the reference frame of the Earth ,the Sun returns to noon in 24 hours and the stars return in 23 hours 56 minutes 04 seconds therefore orbital motion must explain the difference between the two - http://liftoff.msfc.nasa.gov/academy/rocket_sci/orbmech/period.html By its very intricate nature,astronomy lends itself to more abuse than any other discipline and it is for good reason that I can rightly point out that the disgust with which genuine investigators looked on Piltdown man should apply here by many degrees of magnitude - "deliberate malice could hardly have been more successful than the hazards of deposition in so breaking the fossils as to give free scope to individual judgment in fitting the parts together." G S Miller I have stopped short at calling the misconduct perpetrated on astronomy as outright fraud,the orginal mistake by Flamsteed appears to be a genuine error by forgetting that you cannot justify axial rotation as constant by using the return of a star to a location using a 24 hour clock.It is Newton's manner of building on that framework that has cost humanity so much and especially in this era when climatological concerns require an immediate effort to understand what is going on and it is here that the 'frames of reference ' jargon costs so much.
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Date: 03 Sep 2007 08:23:13
From: oriel36
Subject: Re: Kepler ,Newton and orbital geometry
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On Sep 3, 3:10 pm, Quadibloc <jsav...@ecn.ab.ca > wrote: > oriel36 wrote: > >it is strictly the ability to affirm Copernican/ > > Keplerian reasoning using 21st century imaging technology by > > discerning the axial and orbital geometry from space and then > > applying them to geological and especially climatological disciplines. > > > You can actually see how the orbital motion of the Earth causes the > > solar radiation/orbital shadow boundary to alter in accordance with > > Keplerian orbital geometry by looking down at the Earth from space and > > from there into climatological/meteorological influences. > > Were it not for Newton, we would not be able to launch these devices > into space to take pictures. > > > in order to > > bypass the Equation of Time system and extract axial rotation by > > appealing to the return of a star.in 23 hours 56 minutes 04 seconds. > > You convince yourself of whatever you need to,you will even swear > > blind that the natural noon cycles are 24 hours exactly in order to > > justify axial rotation through 360 degrees in 23 hours 56 minutes 04 > > seconds or that retrogrades are resolved by a hypothetical observer on > > the Sun,neither of these are true but are the basis for the Newtonian > > framework. > > http://www.quadibloc.com/science/eot.htm > > I know the natural noon cycles are not 24 hours exactly. But to > explain the Equation of time in a simple manner, so that it is not > confusing, I have to begin from a motion that is regular, and the > return of a star in 23 hours, 56 minutes, and 4 seconds is just that > solid place I have to stand on in order to begin. > > > They no longer send men to the moon,they send satellites to > > theoretical Langrange points as if they were real - > > The gravity of the Sun, the Moon, and the Earth is real. > > > Maybe some dynamicists would wish to consider that the solar system's > > galactic orbital motion may influence the shape of planetary > > heliocentric motion insofar as it represents compound motions,instead > > the Newtonian numbskulls are still treating the solar system as > > isolated as Newton once did - > > They know the Sun is part of a galaxy, and they know when the gravity > of other stars may be safely ignored, just as they know when the > effects given by Einstein's Special and General theories of relativity > may be safely ignored, for they know the sizes of these things. > I have nothing to say about the diseased symptoms of Newton's agenda that emerged in the early 20th century,the fact is that in isolating the solar system in order to apply terrestrial ballistics to planetary motion,the astrological and geocentric framework Newton used cuts off the ability to work with compound motions - "Cor. 2. And since these stars are liable to no sensible parallax from the annual motion of the earth, they can have no force, because of their immense distance, to produce any sensible effect in our system. Not to mention that the fixed stars, every where promiscuously dispersed in the heavens, by their contrary actions destroy their mutual actions, by Prop. LXX, Book I." That is the way people would looked at the solar system and the other stars until the middle of the 1920's but grow up,we are involved in compound orbital motions and it is time to take that motion into account rather than stick with localised solutions. > > The free flowing astronomical methods of Copernicus and Kepler based > > on orbital comparisons will allow dynamicists to work with compound > > orbital motions whereas the celestial sphere framework of Newton makes > > the whole thing wither. > > Compound motions are made simplest to work with when they are > disentangled, when one begins by standing on a solid footing. Whether > that is, to an approximation, the sphere of the stars, or to a better > approximation, when needed, the sphere of the distant galaxies or the > sphere of the anisotropies in the cosmic background radiation. > > John Savard You either like the idea or you do not,the idea that the Earth is travelling with the Sun in the direction of galactic orbital motion for months and travelling in the opposite direction.Another way of putting it is that the Sun has a forward motion in one direction whereas the planets are subject to compound motions around the Sun and with and against the galactic orbital motion of the solar system. It is something that has been here since the mid-1920's when galaxies and galactic rotation was observationally seen.It is about time dynamicists revisted Keplerian orbital geometry rather than being lazy with Newton's localised solution.
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Date: 05 Sep 2007 16:17:05
From: Peter Webb
Subject: Re: Kepler ,Newton and orbital geometry
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> "Cor. 2. And since these stars are liable to no sensible parallax from > the annual motion of the earth, they can have no force, because of > their immense distance, to produce any sensible effect in our system. > Not to mention that the fixed stars, every where promiscuously > dispersed in the heavens, by their contrary actions destroy their > mutual actions, by Prop. LXX, Book I." > What is wrong with that statement? It looks perfectly fine to me. > That is the way people would looked at the solar system and the other > stars until the middle of the 1920's And its still how people look at the solar system, unless they are looking for the 6th or 7th decimal place in the precession of Mercury's orbit. >but grow up,we are involved in > compound orbital motions and it is time to take that motion into > account rather than stick with localised solutions. What motion?
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Date: 03 Sep 2007 07:10:46
From: Quadibloc
Subject: Re: Kepler ,Newton and orbital geometry
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oriel36 wrote: >it is strictly the ability to affirm Copernican/ > Keplerian reasoning using 21st century imaging technology by > discerning the axial and orbital geometry from space and then > applying them to geological and especially climatological disciplines. > > You can actually see how the orbital motion of the Earth causes the > solar radiation/orbital shadow boundary to alter in accordance with > Keplerian orbital geometry by looking down at the Earth from space and > from there into climatological/meteorological influences. Were it not for Newton, we would not be able to launch these devices into space to take pictures. > in order to > bypass the Equation of Time system and extract axial rotation by > appealing to the return of a star.in 23 hours 56 minutes 04 seconds. > You convince yourself of whatever you need to,you will even swear > blind that the natural noon cycles are 24 hours exactly in order to > justify axial rotation through 360 degrees in 23 hours 56 minutes 04 > seconds or that retrogrades are resolved by a hypothetical observer on > the Sun,neither of these are true but are the basis for the Newtonian > framework. http://www.quadibloc.com/science/eot.htm I know the natural noon cycles are not 24 hours exactly. But to explain the Equation of time in a simple manner, so that it is not confusing, I have to begin from a motion that is regular, and the return of a star in 23 hours, 56 minutes, and 4 seconds is just that solid place I have to stand on in order to begin. > They no longer send men to the moon,they send satellites to > theoretical Langrange points as if they were real - The gravity of the Sun, the Moon, and the Earth is real. > Maybe some dynamicists would wish to consider that the solar system's > galactic orbital motion may influence the shape of planetary > heliocentric motion insofar as it represents compound motions,instead > the Newtonian numbskulls are still treating the solar system as > isolated as Newton once did - They know the Sun is part of a galaxy, and they know when the gravity of other stars may be safely ignored, just as they know when the effects given by Einstein's Special and General theories of relativity may be safely ignored, for they know the sizes of these things. > The free flowing astronomical methods of Copernicus and Kepler based > on orbital comparisons will allow dynamicists to work with compound > orbital motions whereas the celestial sphere framework of Newton makes > the whole thing wither. Compound motions are made simplest to work with when they are disentangled, when one begins by standing on a solid footing. Whether that is, to an approximation, the sphere of the stars, or to a better approximation, when needed, the sphere of the distant galaxies or the sphere of the anisotropies in the cosmic background radiation. John Savard
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Date: 04 Sep 2007 06:17:20
From: Margo Schulter
Subject: Re: Kepler ,Newton and orbital geometry
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Quadibloc <jsavard@ecn.ab.ca > wrote: > They know the Sun is part of a galaxy, and they know when the gravity > of other stars may be safely ignored, just as they know when the > effects given by Einstein's Special and General theories of relativity > may be safely ignored, for they know the sizes of these things. Hi, everyone. With this statement I would agree. It reminds me of when I was studying a bit of calculus -- and I could use a refresher! -- and considering free-fall problems. The two obvious considerations were the acceleration of gravity near the Earth's surface, usually taken as a constant in these problems, and also atmospheric drag or wind resistance. However, if one wanted to be more precise, then it would also be necessary to consider that according to Newton's equation, the acceleration of gravity is _not_ a constant, but will slightly change as the distance between the falling body and the Earth's center decreases! Similarly, strictly speaking, all motion is "relativistic," and once I had fun calculating how much time dilation I may have experienced during a long walk from the frame of reference of an observer stationary with respect to the Earth. The result was a fraction of a picosecond (10^-12 second), as I recall. This result nicely illustrated why for most purposes, indeed, a Newtonian approach is more than accurate enough. Anyway, I don't see why we can't approach the idea of a heliocentric Solar System and planetary motions in more than one way: either using modern imaging to illustrate Kepler's explanation of apparent retrograde motion, or using Newton's heliocentric reference frame (to me, a fine thought experiment). We're hardly limited to one frame of reference, and I'd consider it elegant to use two or more, rather like having alternative proofs for a theorem of whatever. Most appreciatively, Margo Schulter mschulter@calweb.com Lat. 38.566 Long. -121.430
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Date: 03 Sep 2007 03:21:05
From: oriel36
Subject: Re: Kepler ,Newton and orbital geometry
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On Sep 3, 6:03 am, Quadibloc <jsav...@ecn.ab.ca > wrote: > oriel36 wrote: > > Rather than go through the details,and they are intricate,perhaps it > > is best to demonstrate why it is neccessary to revisit the explanation > > for Keplerian orbital geometries and how the late 17th century > > shortcuts creates multiple problems elsewhere such as the pressing > > need to modify the cause for the seasons by concentrating on the > > orbital motion of the Earth and Keplerian orbital geometry. > > Newton did not take shortcuts, and except for failing to come up with > the Special and General Theory of Relativity, nothing is lacking in > Newtonian mechanics. > I am not concerned with whether Newton took shortcuts or created conceptual monsters based on an astrological framework,it is the total lack of appreciating of the actual working astronomical principles in structural and timekeeping astronomy.It is not about how Isaac and Flamsteed were wrong,it is strictly the ability to affirm Copernican/ Keplerian reasoning using 21st century imaging technology by discerning the axial and orbital geometry from space and then applying them to geological and especially climatological disciplines. You can actually see how the orbital motion of the Earth causes the solar radiation/orbital shadow boundary to alter in accordance with Keplerian orbital geometry by looking down at the Earth from space and from there into climatological/meteorological influences .As a champion of 21st century imaging,I am not bound to late 17th century notions that introduced a hemispherical pseudo-dynamic of variable axial tilt introduced by Flamsteed and built on by Newton in order to bypass the Equation of Time system and extract axial rotation by appealing to the return of a star.in 23 hours 56 minutes 04 seconds. > The truth of Newton's mechanics, of the inverse-square law of > gravitation, When faced with the actual texts of Kepler describing how he uses the orbital periods of the Earth and Saturn to discern distances from the Sun it should be an occasion for pride among astronomers but instead it is directed to an awful geocentric/heliocentric orbital equivalency of Newton that does not make sense, - "That the fixed stars being at rest, the periodic times of the five primary planets, and (whether of the sun about the earth, or) of the earth about the sun, are in the sesquiplicate proportion of their mean distances from the sun." Newton The very framework which the earthbound Flamsteed/Newton built is now destroying the ability to work productively with imaging of the Earth from space and far from asking readers to actually sort out the differences between Kepler and Newton's contrived mess,I direct them towards imaging which speaks for itself.The key Equation of Time principle which expresses the rate of change of orbital orientation by means of the noon cycle and axial rotation is crucial to making the neccessary modifications for climatological purposes. of the conservation of angular momentum, is reaffirmed > countless times in the workings of our machines, and especially in the > paths of automated space probes launched to photograph the planets of > our solar systems. > You convince yourself of whatever you need to,you will even swear blind that the natural noon cycles are 24 hours exactly in order to justify axial rotation through 360 degrees in 23 hours 56 minutes 04 seconds or that retrogrades are resolved by a hypothetical observer on the Sun,neither of these are true but are the basis for the Newtonian framework. > If Newton were wrong, the Apollo astronauts would not have made it > back home. > > John Savard You have no idea what it feels like to witness the dominance of the astronomical discipline by mathematicians who have little regard for what is involved in appreciating the great cycles which make existence possible.They no longer send men to the moon,they send satellites to theoretical Langrange points as if they were real - http://www.jwst.nasa.gov/orbit.html Maybe some dynamicists would wish to consider that the solar system's galactic orbital motion may influence the shape of planetary heliocentric motion insofar as it represents compound motions,instead the Newtonian numbskulls are still treating the solar system as isolated as Newton once did - "Cor. 2. And since these stars are liable to no sensible parallax from the annual motion of the earth, they can have no force, because of their immense distance, to produce any sensible effect in our system. Not to mention that the fixed stars, every where promiscuously dispersed in the heavens, by their contrary actions destroy their mutual actions, by Prop. LXX, Book I." The free flowing astronomical methods of Copernicus and Kepler based on orbital comparisons will allow dynamicists to work with compound orbital motions whereas the celestial sphere framework of Newton makes the whole thing wither.
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Date: 03 Sep 2007 01:09:30
From: Isaac
Subject: Re: Kepler ,Newton and orbital geometry
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Duroc. oriel36 wrote: > The Wikipedia article is being quite honest but the chain of reasoning > Newton applied to Keplerian orbits are technically present and can be > dealt with easily,at least for people who are familiar with > astronomical methods - > > "Newton's actual historical chain of reasoning is not known with > certainty, because in his writing he tended to erase any traces of how > he had reached his conclusions." Kepler's third law > > http://en.wikipedia.org/wiki/Kepler's_laws_of_planetary_motion > > 'PHÆNOMENON IV.' > "That the fixed stars being at rest, the periodic times of the five > primary planets, and (whether of the sun about the earth, or) of the > earth about the sun, are in the sesquiplicate proportion of their mean > distances from the sun. > > This proportion, first observed by Kepler, is now received by all > astronomers; for the periodic times are the same, and the dimensions > of the orbits are the same, whether the sun revolves about the earth, > or the earth about the sun." > > http://members.tripod.com/~gravitee/phaenomena.htm > > Rather than go through the details,and they are intricate,perhaps it > is best to demonstrate why it is neccessary to revisit the explanation > for Keplerian orbital geometries and how the late 17th century > shortcuts creates multiple problems elsewhere such as the pressing > need to modify the cause for the seasons by concentrating on the > orbital motion of the Earth and Keplerian orbital geometry.
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Date: 02 Sep 2007 22:03:29
From: Quadibloc
Subject: Re: Kepler ,Newton and orbital geometry
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oriel36 wrote: > Rather than go through the details,and they are intricate,perhaps it > is best to demonstrate why it is neccessary to revisit the explanation > for Keplerian orbital geometries and how the late 17th century > shortcuts creates multiple problems elsewhere such as the pressing > need to modify the cause for the seasons by concentrating on the > orbital motion of the Earth and Keplerian orbital geometry. Newton did not take shortcuts, and except for failing to come up with the Special and General Theory of Relativity, nothing is lacking in Newtonian mechanics. The truth of Newton's mechanics, of the inverse-square law of gravitation, of the conservation of angular momentum, is reaffirmed countless times in the workings of our machines, and especially in the paths of automated space probes launched to photograph the planets of our solar systems. If Newton were wrong, the Apollo astronauts would not have made it back home. John Savard
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