|
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
For Kids and Grownups -- Exploration3: the Incredible Shrinking Moon
For Kids and Grownups -- Exploration3: the Incredible Shrinking Moon
http://www.harvard.edu/webscope/acti.../pdfs/moon.pdf |
#2
|
|||
|
|||
For Kids and Grownups -- Exploration3: the Incredible Shrinking Moon
On Mar 25, 6:55*am, Sam Wormley wrote:
For Kids and Grownups -- Exploration3: the Incredible Shrinking Moonhttp://www.harvard.edu/webscope/activities/pdfs/moon.pdf I got a 404, Sam. (twice) |
#3
|
|||
|
|||
For Kids and Grownups -- Exploration3: the Incredible Shrinking Moon
On Mar 25, 6:28*pm, Ben wrote:
On Mar 25, 6:55*am, Sam Wormley wrote: For Kids and Grownups -- Exploration3: the Incredible Shrinking Moonhttp://www.harvard.edu/webscope/activities/pdfs/moon.pdf I got a 404, Sam. *(twice) Me too... |
#4
|
|||
|
|||
For Kids and Grownups -- Exploration3: the Incredible ShrinkingMoon
On 3/25/11 8:31 PM, palsing wrote:
On Mar 25, 6:28 pm, wrote: On Mar 25, 6:55 am, Sam wrote: For Kids and Grownups -- Exploration3: the Incredible Shrinking Moonhttp://www.harvard.edu/webscope/activities/pdfs/moon.pdf I got a 404, Sam. (twice) Me too... Well this works... Sorry about that! -Sam http://www.google.com/url?sa=t&sourc...pnvWhF9GjHszMg |
#5
|
|||
|
|||
For Kids and Grownups -- Exploration3: the Incredible Shrinking Moon
On Mar 26, 2:59*am, Sam Wormley wrote:
On 3/25/11 8:31 PM, palsing wrote: On Mar 25, 6:28 pm, *wrote: On Mar 25, 6:55 am, Sam *wrote: For Kids and Grownups -- Exploration3: the Incredible Shrinking Moonhttp://www.harvard.edu/webscope/activities/pdfs/moon.pdf I got a 404, Sam. *(twice) Me too... Well this works... Sorry about that! -Sam http://www.google.com/url?sa=t&sourc...QFjAI&url=http... "Here’s a real brain-teaser that will test your ability to visualize motion: When seen from a spot on the Moon, does the Earth rise slowly, quickly, or not at all? Recall that the Earth spins on its axis once a day;the Moon spins on its axis once every 27 days (roughly);and the Moon revolves around the Earth in exactly the same time—once every 27 days (roughly).It helps if you and a friend build a model of the Earth-Moon system and try moving the Earth and Moon.What does each of you see as you move?" http://www.cfa.harvard.edu/webscope/.../pdfs/moon.pdf So this is supposed to be one of the premier empirical institutions on the planet and they firmly believe that the moon has traits of intrinsic rotation which amounts to variations in latitudinal speeds from equatorial to polar coordinates.That is no a brain-teaser,that is merely aping Newton who was the only one to announce the moon rotates and if that powdered wig said it rotates then his followers can't imagine any different - http://books.google.ie/books?id=gB2-...page&q&f=false You unfortunate people,truly ! |
#6
|
|||
|
|||
For Kids and Grownups -- Exploration3: the Incredible Shrinking Moon
On Mar 26, 6:17*am, oriel36 wrote:
On Mar 26, 2:59*am, Sam Wormley wrote: On 3/25/11 8:31 PM, palsing wrote: On Mar 25, 6:28 pm, *wrote: On Mar 25, 6:55 am, Sam *wrote: For Kids and Grownups -- Exploration3: the Incredible Shrinking Moonhttp://www.harvard.edu/webscope/activities/pdfs/moon.pdf I got a 404, Sam. *(twice) Me too... Well this works... Sorry about that! -Sam http://www.google.com/url?sa=t&sourc...QFjAI&url=http... "Here’s a real brain-teaser that will test your ability to visualize motion: When seen from a spot *on the Moon, does the *Earth rise slowly, quickly, or not at all? Recall that the Earth spins on its axis once a day;the *Moon spins on its axis once every 27 days (roughly);and the Moon revolves around the Earth in exactly the same time—once every 27 days (roughly).It helps if you and a friend build a model of the Earth-Moon system and *try *moving *the *Earth *and Moon.What does each of you see as you move?" http://www.cfa.harvard.edu/webscope/.../pdfs/moon.pdf So this is supposed to be one of the premier empirical institutions on the planet and they firmly believe that the moon has traits of intrinsic rotation which amounts to variations in latitudinal speeds from equatorial to polar coordinates.That is no a brain-teaser,that is merely aping Newton who was the only one to announce the moon rotates and if that powdered wig said it rotates then his followers can't imagine any different - http://books.google.ie/books?id=gB2-...q=newton+moon+... You unfortunate people,truly ! How about the statement that you can see up to 70 percent of the Moon's surface from Earth. A statement you can easily verify for yourself using the technology of Galileo (a small telescope). You have yet to come up with an explanation for libration in hour fanciful universe. Without exposing this effect you will have to admit you are wrong about lunar rotation. If you ignore this reply or just waffle you will be shown to be a doublethinker or fraud. |
#7
|
|||
|
|||
For Kids and Grownups -- Exploration3: the Incredible Shrinking Moon
On Mar 26, 1:35*pm, Mike Collins wrote:
On Mar 26, 6:17*am, oriel36 wrote: On Mar 26, 2:59*am, Sam Wormley wrote: On 3/25/11 8:31 PM, palsing wrote: On Mar 25, 6:28 pm, *wrote: On Mar 25, 6:55 am, Sam *wrote: For Kids and Grownups -- Exploration3: the Incredible Shrinking Moonhttp://www.harvard.edu/webscope/activities/pdfs/moon.pdf I got a 404, Sam. *(twice) Me too... Well this works... Sorry about that! -Sam http://www.google.com/url?sa=t&sourc...QFjAI&url=http... "Here’s a real brain-teaser that will test your ability to visualize motion: When seen from a spot *on the Moon, does the *Earth rise slowly, quickly, or not at all? Recall that the Earth spins on its axis once a day;the *Moon spins on its axis once every 27 days (roughly);and the Moon revolves around the Earth in exactly the same time—once every 27 days (roughly).It helps if you and a friend build a model of the Earth-Moon system and *try *moving *the *Earth *and Moon.What does each of you see as you move?" http://www.cfa.harvard.edu/webscope/.../pdfs/moon.pdf So this is supposed to be one of the premier empirical institutions on the planet and they firmly believe that the moon has traits of intrinsic rotation which amounts to variations in latitudinal speeds from equatorial to polar coordinates.That is no a brain-teaser,that is merely aping Newton who was the only one to announce the moon rotates and if that powdered wig said it rotates then his followers can't imagine any different - http://books.google.ie/books?id=gB2-...q=newton+moon+... You unfortunate people,truly ! How about the statement that you can see up to 70 percent of the Moon's surface from Earth. A statement you can easily verify for yourself using the technology of Galileo (a small telescope). You look out at the moon orbiting the Earth,note the phases as the moon occupies different orbital positions between the Sun and the Earth with the Earth as center of the lunar cycle and draw the only possible conclusion.Use an imitation analogy of lunar orbital motion will get you there also but effectively it is childsplay. You have yet to come up with an explanation for libration in hour fanciful universe. Without exposing this effect you will have to admit you are wrong about lunar rotation. Without acknowledging the orbital turning of the Earth to the central Sun where the orbital daylight/darkness cycle is coincident with the orbital period of the Earth you can forget about lunar libration,I have a fair idea of what causes that phenomena but these are fine points whereas the orbital behavior of the moon is crucial for understanding the difference with the orbital behavior of a planet. If you ignore this reply or just waffle you will be shown to be a doublethinker or fraud. Don't you ever address me again. |
#8
|
|||
|
|||
For Kids and Grownups -- Exploration3: the Incredible Shrinking Moon
On Mar 26, 4:11*pm, oriel36 wrote:
On Mar 26, 1:35*pm, Mike Collins wrote: On Mar 26, 6:17*am, oriel36 wrote: On Mar 26, 2:59*am, Sam Wormley wrote: On 3/25/11 8:31 PM, palsing wrote: On Mar 25, 6:28 pm, *wrote: On Mar 25, 6:55 am, Sam *wrote: For Kids and Grownups -- Exploration3: the Incredible Shrinking Moonhttp://www.harvard.edu/webscope/activities/pdfs/moon.pdf I got a 404, Sam. *(twice) Me too... Well this works... Sorry about that! -Sam http://www.google.com/url?sa=t&sourc...QFjAI&url=http... "Here’s a real brain-teaser that will test your ability to visualize motion: When seen from a spot *on the Moon, does the *Earth rise slowly, quickly, or not at all? Recall that the Earth spins on its axis once a day;the *Moon spins on its axis once every 27 days (roughly);and the Moon revolves around the Earth in exactly the same time—once every 27 days (roughly).It helps if you and a friend build a model of the Earth-Moon system and *try *moving *the *Earth *and Moon.What does each of you see as you move?" http://www.cfa.harvard.edu/webscope/.../pdfs/moon.pdf So this is supposed to be one of the premier empirical institutions on the planet and they firmly believe that the moon has traits of intrinsic rotation which amounts to variations in latitudinal speeds from equatorial to polar coordinates.That is no a brain-teaser,that is merely aping Newton who was the only one to announce the moon rotates and if that powdered wig said it rotates then his followers can't imagine any different - http://books.google.ie/books?id=gB2-...q=newton+moon+... You unfortunate people,truly ! How about the statement that you can see up to 70 percent of the Moon's surface from Earth. A statement you can easily verify for yourself using the technology of Galileo (a small telescope). You look out at the moon orbiting the Earth,note the phases as the moon occupies different orbital positions between the Sun and the Earth with the Earth as center of the lunar cycle and draw the only possible conclusion.Use an imitation analogy of lunar orbital motion will get you there also but effectively it is childsplay. You have yet to come up with an explanation for libration in hour fanciful universe. Without exposing this effect you will have to admit you are wrong about lunar rotation. Without acknowledging the orbital turning of the Earth to the central Sun where the orbital daylight/darkness cycle is coincident with the orbital period of the Earth you can forget about lunar libration,I have a fair idea of what causes that phenomena but these are fine points whereas the orbital behavior of the moon is crucial for understanding the difference with the orbital behavior of a planet. If you ignore this reply or just waffle you will be shown to be a doublethinker or fraud. Don't you ever address me again.- Hide quoted text - - Show quoted text - So you have no explanation for the phenomenon of libration. You just waffled then said you have a fair idea of the cause of libration. Tell us about this fair idea. Or you will be admitting you are a doublethinker or a fraud. |
#9
|
|||
|
|||
For Kids and Grownups -- Exploration3: the Incredible Shrinking Moon
In sci.astro.amateur message e2cbf96f-ba16-48e1-b8cc-7685b12fd212@x18g2
000yqe.googlegroups.com, Sat, 26 Mar 2011 05:35:19, Mike Collins posted: How about the statement that you can see up to 70 percent of the Moon's surface from Earth. A statement you can easily verify for yourself using the technology of Galileo (a small telescope). http://en.wikipedia.org/wiki/Moon : "Libration also changes the angle from which the Moon is seen, allowing about 59% of its surface to be seen from the Earth". I don't know whether that figure, dominantly at least due to apparent "side to side" motion caused by eccentricity, includes the apparent "nodding" motion due to tilts, or the extra half a degree all round due to parallax and the size of the Earth. -- (c) John Stockton, nr London, UK. Turnpike v6.05 MIME. Web http://www.merlyn.demon.co.uk/ - FAQqish topics, acronyms and links; Astro stuff via astron-1.htm, gravity0.htm ; quotings.htm, pascal.htm, etc. No Encoding. Quotes before replies. Snip well. Write clearly. Don't Mail News. |
#10
|
|||
|
|||
For Kids and Grownups -- Exploration3: the Incredible Shrinking Moon
http://en.wikipedia.org/wiki/Moon : "Libration also changes the angle from which the Moon is seen, allowing about 59% of its surface to be seen from the Earth". I don't know whether that figure, dominantly at least due to apparent "side to side" motion caused by eccentricity, includes the apparent "nodding" motion due to tilts, or the extra half a degree all round due to parallax and the size of the Earth. There are three classes of libration, optical, physical and topocentric. Jean Meuss in 'Astronomical Algorithms' states: However, apparent oscillations known as *optical librations* which are due to variations in the geometric position of the Earth.......allow about 59% of the surface to be observed from the Earth. (p.371) He goes on to say that *physical libration* can never be larger than 0.04 degree in both latitude and longitude. Well that's not very much and would be observable only under the most rigorous conditions. But concerning *topocentric librations* he states that the geocentric values of the librations and the position angle of axis should be reduced to the values at the place of the observer on the surface of the Earth. "For the librations the values may reach 1 degree and have important effects on limb contour." So by shifting one's position around the Earth, say from Hudson Bay to Tierra del Fuego one could see perhaps 60% of the Moon's surface? I don't know. I've always held the 59% factor as an adequate estimate. |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
NASA - See the Incredible Shrinking Planet | Nick | UK Astronomy | 1 | February 22nd 06 10:24 AM |
Kids, the moon and some torches | Pete Lawrence | UK Astronomy | 9 | June 20th 05 06:41 PM |
Kids and the moon | CLT | UK Astronomy | 1 | April 25th 04 11:59 AM |
Is the moon leaving, or are we shrinking by 38 mm/year | OM | History | 11 | December 15th 03 07:38 PM |
Is the moon leaving, or are we shrinking by 38 mm/year | Marvin | Astronomy Misc | 7 | December 15th 03 07:38 PM |