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The Sun's Analemma 

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The Sun's Analemma - May 5, 1995

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27 сен 2024

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Комментарии : 47   
@JayNadlman
@JayNadlman 9 лет назад
The speaker is Professor Paul Tebbe. He worked on this for an entire year, tracking the sun.
@John.M.Gannon
@John.M.Gannon 2 года назад
It's not the same everywhere on earth, it's upside-down in Australia.
@Cutthecamerasdeadass1899
@Cutthecamerasdeadass1899 Год назад
Yet it's STILL the same...
@NKVoltgunner
@NKVoltgunner 11 лет назад
My Great Uncle Tebbe. Love you always. It made me cry and smile.
@rayado505
@rayado505 2 года назад
No way the Earth doesn't move .You wrong . The Earth doesn t move never.
@gregorybrown2843
@gregorybrown2843 3 года назад
So does this make earth flat if seasons depend on the tilt of earth vs the rotation
@Kapoosh000
@Kapoosh000 3 года назад
No why would it
@Nicholas_PA
@Nicholas_PA 2 года назад
@@Kapoosh000 so you don’t know for sure, but insist on saying “no”. Got it
@Kapoosh000
@Kapoosh000 2 года назад
@@Nicholas_PA lmao what? I know for sure the earth is round. His question made no sense and didn't follow
@Nicholas_PA
@Nicholas_PA 2 года назад
@@Kapoosh000 keep laughing, makes perfect sense, to those who have any. We’ve never been to “space” so it takes a lot more research than just the lies we’ve been taught since the cradle
@Kapoosh000
@Kapoosh000 2 года назад
@@Nicholas_PA you don't have to go to space buddy. How do you think the seasons work?
@libertyresearch-iu4fy
@libertyresearch-iu4fy 6 лет назад
1. The solar analemma is produced with photos at the exact same time every day of a year. 2. A tutulemma includes a solar eclipse as one of the points. 3. It appears differently shaped above the horizon on different parts of the earth. 4. The tilt of the analemma depends, in part, upon the time of day the photos are taken. 5. Within the Arctic and Antarctic circles it is partially behind the horizon. 6. At the poles the analemma is vertical, and the tilt changes at each degree of latitude. 7. It is horizontal and directly overhead at noon at the equator, and the loops are equal in size. 8. Its southern loop is larger in the northern hemisphere, and its northern loop is larger in the southern hemisphere. 9. If the earth did not tilt the analemma would be a horizontal line. 10. If the earth's orbit around the sun was a perfect circle, the analemma would be a vertical line. 11. If the earth did not tilt AND the orbit was a perfect circle the analemma would be a dot.
@meesterpeter-y6c
@meesterpeter-y6c 4 года назад
7. No, the loops are not equal in size. This depends on the Perhelion point and this is the same everywhere on earth.
@libertyresearch-iu4fy
@libertyresearch-iu4fy 4 года назад
@@meesterpeter-y6c 6. It is horizontal and directly overhead at noon at the equator 7. The loop tends to be longer towards the equator and equal at the equator though it also depends upon the speed and proximity of the Earth's orbit which constantly varies.
@iamrobertu
@iamrobertu 4 года назад
10. If the earth's orbit around the sun was a perfect circle, the analemma would be a vertical line. Not true! If the earth's orbit around the sun was a perfect circle, the analemma would be a perfect figure 8, with no difference between the top half and bottom half. It's the obliquity of the orbit that give the analemma it's figure 8 shape, it's the ECCENTRICITY of the orbit that makes it smaller at the top and it's the fact that perhilion doesn't occur on Dec 21st that give it the lopsided shape. (Apse angle)
@libertyresearch-iu4fy
@libertyresearch-iu4fy 4 года назад
@@iamrobertu Not true! It is the obliquity that gives the analemma its horizontal irregularities. It is the tilt of the axis that gives the analemma its vertical irregularities.
@iamrobertu
@iamrobertu 4 года назад
@@libertyresearch-iu4fy Tilt and obliquity are the same thing.
@whatabouttheearth
@whatabouttheearth 5 лет назад
-Vertical axis = earths tilt ( solstices on Dec22/June 22 are close to the time of Perihelion/aphelion, Jan 3/4 & July 3/4) -Horizontal axis = the inconsistency between the suns "time" and our inaccurate solar based calender system which effects our daily and hourly time. The horizontal axis isnt naturally "real", its based on our inaccurate solar calender....its actually only a vertical line according to the suns "real" time.
@Gr8Believer
@Gr8Believer 3 года назад
This doesn't make sense because he is trying to explain this on a ball earth. but on a Flat Earth it makes perfect sense.
@Cutthecamerasdeadass1899
@Cutthecamerasdeadass1899 Год назад
You and the 10 dunces need to go watch the sun rise and set
@Cutthecamerasdeadass1899
@Cutthecamerasdeadass1899 Год назад
The sun is at these positions at the same time of every year making a figure 8....if the earth was flat, no seasons, no night time, you would've the found the end of it all ready NO ONE IS STOPPING YOU, sun would be flat, the moon with be flat, no water, and every planet, star, moon, celestial body would be flat not just earth, No gravity, life wouldn't exist. If you're gonna believe in something stupid and theorize something stupid...make sure it ACTUALLY makes sense and be realistic 😂 you m0r0n
@KirkDoak
@KirkDoak 2 года назад
Only the measurements work on a level system and not a globe system. Report this false information.
@IgotQuestions.
@IgotQuestions. 7 лет назад
I still don't get how the elíptical orbit cause an 8 and not a oval , is the sun moving ? How can this be ?
@olafjernskjegg3855
@olafjernskjegg3855 6 лет назад
Did you not watch the video?
@WollongongSkyWatch
@WollongongSkyWatch 6 лет назад
The sun moves!
@davidmella1174
@davidmella1174 4 года назад
It’s eccentricity plus the earths tilt
@meesterpeter-y6c
@meesterpeter-y6c 4 года назад
@@davidmella1174 There would be a coval if the Perhileon point would be at the Wintersolstice (at the bottem of the figure) ore Summersolstice (at the top of the figure). This was approxamate a thousand years ago the case. Now this Perhileon point is still moving away from the Winter and Summersolstice and makes this crosspoint of the 8 figure somewhere between these two points. So there is indeed just one Perhelionpoint but there are still two equinoxes (spring and autumn) due to the tilt of the earth and these two movements combined makes the two loops of the Analemma. ;)
@peterfriesen4885
@peterfriesen4885 3 года назад
The earth is flat, and the sun moves above the earth. It's not as far as they tell us, and only about 50 miles across.
@ValpoKnightTwister
@ValpoKnightTwister 3 года назад
Finally analemma.com is back online. For some reason my previous comments are not here anymore. 4:45 The professor states that it's the eliptical orbit that causes the east-west motion. That's not entirely correct. It's the elliptical orbit that causes the figure-8 shape to be fatter on the bottom, but it's the TILT that causes the shape to be a figure-8 in the first place. It's a complicated motion to see, but analemma.com explains it quite nicely in the "Obliquity" section. Also see Analemma Generator at alokm.com/astro/analemmagenerator.html Here you can see for yourself if you take away the tilt, the figure-8 shape resolves to a straight line east and west, regardless of the eccentricity.
@pattystomper1
@pattystomper1 5 лет назад
The "fast/slow" explanation doesn't make sense. If it was the way you described, then the analemma would be an oval instead of a figure 8. Think about it. Instead of being fast once a year, and slow once a year; it's fast twice a year and slow twice a year. So there has to be another explanation for it.
@meesterpeter-y6c
@meesterpeter-y6c 4 года назад
This would be if the Perhileon would be at the Wintersolstice (at the bottem of the figure) ore Summersolstice (at the top of the figure). This was approxamate a thousand years ago the case. Now this Perhileon point is still moving away from the Winter and Summersolstice and makes this crosspoint of the 8 figure somewhere between these two points. So there is indeed just one Perhelionpoint as you mentioned but there are still two equinoxes (spring and autumn) due to the tilt of the earth and these two movements combined makes the two loops of the Analemma. ;)
@BolRazJedenCobol
@BolRazJedenCobol Месяц назад
Earth isn't flat for real?
@Olhamo
@Olhamo 6 лет назад
enjoyed this
@richardizzi3924
@richardizzi3924 3 года назад
Aprol and Mayare on the rigjt sife of loop not left
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