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The Earth polar coordinates turn in a circle to the central Sun and in
less than two weeks will turn through the circle of illumination as it has done two for every orbit over the billions of years it has been in existence - http://en.wikipedia.org/wiki/File:Earth_precession.svg Apart from the degree of inclination,the planet Uranus is doing the exact same thing - http://www.daviddarling.info/images/...gs_changes.jpg I don't know why people do not see why the Earth has a largely equatorial climate when all the information is put together and especially the simple imitation analogy which explains two separate axis for two simple motions,one daily rotational and the other orbital,for without this information it is impossible to discuss climate or weather. A society without astronomy has really nothing to say. |
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I don't understand the subject line: aren't the equinoxes in the spring
and fall, not summer? |
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On Sep 8, 6:43*pm, Chris Jones wrote:
I don't understand the subject line: *aren't the equinoxes in the spring and fall, not summer? Huh? Fall begins with an equinox in September. So what is the problem? John Savard |
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Quadibloc writes:
On Sep 8, 6:43Â*pm, Chris Jones wrote: I don't understand the subject line: Â*aren't the equinoxes in the spring and fall, not summer? Huh? Fall begins with an equinox in September. So what is the problem? Blush... I misread "Summer" for "September". And I don't even have a trace of dyslexia to blame it on. |
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On Sep 9, 2:43*am, Chris Jones wrote:
I don't understand the subject line: *aren't the equinoxes in the spring and fall, not summer? No problem - an equinox for an astronomer is when the polar coordinate turns to a position that is at a right angle to the central Sun,for a magnification enthusiast it is something about the Sun crossing a Ra/ Dec convention,fine if that is all they can manage but exceptionally poor when planetary dynamics is responsible for the equinoxes and solstices. Astronomy is not really a magnification exercise for the middle class,it belongs to all humanity and especially students who never learn so many of its principles,insights and methods and most of which are within reach of teenagers and interested adults.The creation of the calendar system using the annual return of a star and the great flooding of the Nile is one such lesson in astronomy and from there on to the great timekeeping system we use today in tandem with the daily and orbital motions of the Earth.For some awful reason the entire system is rejected for little more than a poor judgment and the dominance of mathematicians who have a stranglehold on astronomy and terrestrial sciences. |
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oriel36 wrote:
On Sep 9, 2:43 am, Chris Jones wrote: I don't understand the subject line: aren't the equinoxes in the spring and fall, not summer? No problem - an equinox for an astronomer is when the polar coordinate turns to a position that is at a right angle to the central Sun,for a magnification enthusiast it is something about the Sun crossing a Ra/ Dec convention,fine if that is all they can manage but exceptionally poor when planetary dynamics is responsible for the equinoxes and solstices. Astronomy is not really a magnification exercise for the middle class,it belongs to all humanity and especially students who never learn so many of its principles,insights and methods and most of which are within reach of teenagers and interested adults.The creation of the calendar system using the annual return of a star and the great flooding of the Nile is one such lesson in astronomy and from there on to the great timekeeping system we use today in tandem with the daily and orbital motions of the Earth.For some awful reason the entire system is rejected for little more than a poor judgment and the dominance of mathematicians who have a stranglehold on astronomy and terrestrial sciences. Since you are so keen on the ideas of Greek philosophers you should accept that this is about people like you. From Plato's Timaeus/ "innocent light-minded men who think that astronomy can be learnt by looking at the stars without knowledge of mathematics will become birds " (in the next life). In your case presumably an oriole. |
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"Mike Collins" wrote in message ...
oriel36 wrote: On Sep 9, 2:43 am, Chris Jones wrote: I don't understand the subject line: aren't the equinoxes in the spring and fall, not summer? No problem - an equinox for an astronomer is when the polar coordinate turns to a position that is at a right angle to the central Sun,for a magnification enthusiast it is something about the Sun crossing a Ra/ Dec convention,fine if that is all they can manage but exceptionally poor when planetary dynamics is responsible for the equinoxes and solstices. Astronomy is not really a magnification exercise for the middle class,it belongs to all humanity and especially students who never learn so many of its principles,insights and methods and most of which are within reach of teenagers and interested adults.The creation of the calendar system using the annual return of a star and the great flooding of the Nile is one such lesson in astronomy and from there on to the great timekeeping system we use today in tandem with the daily and orbital motions of the Earth.For some awful reason the entire system is rejected for little more than a poor judgment and the dominance of mathematicians who have a stranglehold on astronomy and terrestrial sciences. Since you are so keen on the ideas of Greek philosophers you should accept that this is about people like you. From Plato's Timaeus/ "innocent light-minded men who think that astronomy can be learnt by looking at the stars without knowledge of mathematics will become birds " (in the next life). In your case presumably an oriole. ===================== Bwahahahahahaha! Nice one! -- This message is brought to you from the keyboard of Lord Androcles, Zeroth Earl of Medway |
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On Sep 15, 9:06*pm, Mike Collins wrote:
oriel36 wrote: On Sep 9, 2:43 am, Chris Jones wrote: I don't understand the subject line: *aren't the equinoxes in the spring and fall, not summer? No problem - an equinox for an astronomer is when the polar coordinate turns to a position that is at a right angle to the central Sun,for a magnification enthusiast it is something about the Sun crossing a Ra/ Dec convention,fine if that is all they can manage but exceptionally poor when planetary dynamics is responsible for the equinoxes and solstices. Astronomy is not really a magnification exercise for the middle class,it belongs to all humanity and especially students who never learn so many of its principles,insights and methods and most of which are within reach of teenagers and interested adults.The creation of the calendar system using the annual return of a star and the great flooding of the Nile is one such lesson in astronomy and from there on to the great timekeeping system we use today in tandem with the daily and orbital motions of the Earth.For some awful reason the entire system is rejected for little more than a poor judgment and the dominance of mathematicians who have a stranglehold on astronomy and terrestrial sciences. Since you are so keen on the ideas of Greek philosophers you should accept that this is about people like you. From Plato's Timaeus/ "innocent light-minded men who think that astronomy can be learnt by looking at the stars without knowledge of mathematics will become birds " (in the next life). In your case presumably an oriole. You don't need mathematics to enjoy astronomy no more than you need mathematics to drive a car and interpret speed,bends on the road and how and when to overtake another vehicle as these things come naturally and while it is true that you need talent to drive at a level of F1 ,I believe that these drivers begin with go karts.The astronomical equivalent is learning how the calendar system is put together using an annual meteorological event,the appearance of a star and how many days it takes that star to return from behind the glare of the Sun and unfortunately none of you can get into first gear here.Even to the Greeks,the golden age of astronomy was thousands of years older as they encountered Egyptian astronomy and people have come to accept that astronomy on the Western European isles is much older still so much like many here restrict astronomy to magnification and nothing else,so they also limit historical perspectives in a way the old Greek astronomers never did. As the biggest single user of 21st imaging to promote a method or an insight there is no need to fuss too much about representing cause and effect on paper as the older astronomers once did,anyone with a talent for interpretation can simple discover a common denominator in all planets and apply them to appropriate cause and effect.The fact that the Earth turns twice to the central Sun,it turns 4 times as a component of its orbital motion while turning 1461 times in its daily cycle can be drawn down from watch Uranus do much the same thing albeit with its own proportion between rotations and orbital cycles - http://www.daviddarling.info/encyclo...nus_rings.html You once could hold a technical argument but like so many others it seems you have descended into being a nuisance in which case you can have the luxury of saying whatever you want,my business is to find people who can talk about the new approaches to astronomy using modern imaging rather than being dragged down into a false and flawed late 17th century perspective that is going nowhere.This is a shame as you have remained in this forum as it has transformed itself from being a middle class magnification exercise into a source of information to the wider community where lots have changed as they have adapted and adopted many of the issues brought up here in this forum,some with more success than others. |
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Thread | Thread Starter | Forum | Replies | Last Post |
The March Equinox 2012 | oriel36[_2_] | Amateur Astronomy | 17 | March 22nd 12 03:58 PM |
September equinox 2011 | oriel36[_2_] | Amateur Astronomy | 3 | September 23rd 11 06:30 PM |