The sun rises in the east and set in the westkalimat mana yang salah?

     
L>Sunrise & Sunphối
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Where Does the Sun Rise & Set? Most people know that theSun "rises in the east & sets in the west".However, most people don"t realize that is a generalization.Actually, the Sun only rises due east & sets due west on2 days of the year -- the spring và fall equinoxes!On other days, the Sun rises either north or south of "due east"and sets north or south of "due west."Each day the rising và settingpoints change slightly. At the summer solstice, the Sun rises as farkhổng lồ the northeast as it ever does, và sets as far to the northwest.Every day after that, the Sun rises a tiny bit further south.Atthe fall equinox, the Sun rises due east & sets due west. Itcontinues on it"s journey southward until, at the winter solstice, the Sun rises are far lớn the south as it ever does,và sets as far lớn the southwest.Many, if not most, prehistoric cultures tracked theserising và settings points with great detail.If they had jagged mountains along the horizon, the exact points could bereadily remembered. Without a suitably interesting horizon, standing stonescould be arranged to lớn line up withthe various rising & setting points. Or, tree poles could replacethe standing stones. Or, roông xã cairns could be used. How does this work? The dioramas simulate the rising và setting points of the Sun,và its tracks across the sky at summer solstice(longest track), winter solstice (shorkiểm tra track), & the spring and fallequinoxes (medium track). A bead placed on one of the trackssimulates the Sun rising along the eastern horizon, travelong along the sky,& setting on the western horizon. Imagine a tiny version of yourself standing in the middle of the wooden disk. Andimagine that the outside ryên of the disk represents your horizon. On SummerSolstice, you would see the Sun rise on your "horizon" at the eastern point of thelongest trachồng.


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It would follow the trachồng high in your sky, and eventuallyset on the western horizon. It would be up for about 17 "hours", thus makingsummertime days long & warm.On the Winter Solstice, you would observe the Sun rising at the western over of thesmallest traông chồng. It wouldn"t rise high in the sky, & would be up for only about6 or 7 hours, making your days short on daylight và cold.At the Spring & the Fall equinoxes, the Sun would rise at the east over of the middletraông chồng and mix at the west over. Your days would be exactly half daylight & half nighttime& you would experience typical warm/cool spring and fall climates.Build your own Sun Traông xã DioramaWhat about the stars?The rising points of the stars don"t change as much as the Sun"s becausethey are so very far away. So the rising points of stars on the horizon werenot as critical to lớn ancient cultures.However, the rising times of stars change by 4 minutes each day, soany particular star would rise at different times during the year. Forabout half the time, the star would rise during the daytime và thus beblocked by the huge light of our Sun.There was something calledthe "heliacal" or dawn rise of a star -- and this happened on only one day ofthe year.Thus these dawn rising were extremely useful for keeping traông chồng of exact days.For an explanation và examples of heliacal or dawn risings of stars, seeShow Me a Heliacal Rising. Image credits:Medicine Wheel sunset photograph by Tom Melmê say.The Tom Melmê say picture appeared in the National Geographic. According khổng lồ them, it is part of a collection"Mysteries of Mankind: Earth"s Unexplained Landmarks" and the imageis listedas usuable, with no permission or payment required. Just need togive credit, which is: Medicine Wheel sunset photograph by Tom Meltê mê. Native sầu American Suntraông xã Diorama photo và kiến thiết by Ginger Armsvào, Kelseyville, CA.Seasons Suntraông chồng Diorama photo by Ben Buress, Chabot Space và Science Center.Suntraông xã dioramas designed by Deborah Scherrer & Barbara Scherrer. ©2005-2021 by acsantangelo1907.com SOLAR Center | Permitted Uses | Credits
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