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登临泰山顶峰,观赏海上日出,是每个赴泰山旅游者的心愿.但很多人不能如愿以偿,这除了天公不作美之外,就是没有掌握天文地理因素所致.人们知道自转着的地球绕太阳公转,由于黄赤交角的存在,太阳直射点在地球上有周年回归运动.也就是地球在轨道上有南北向大约一亿二千万公里的移动.这就使得泰山顶峰观看日出的方向在夏至日和冬至日有偏离正东以北或以南约30°的角度.也就是太阳赤纬的变
It is the wish of every traveler to Taishan to visit the summit of Taishan and admire the sunrise at sea, but many people can not get what they want, which is due to the lack of understanding of the astronomical and geography factors except the unlucky people. People know that the rotating earth rotates around the sun Due to the existence of the yellow-red angle, the direct sun spot has an annual return movement on Earth, which means there are about 120 million kilometers of north-south movement of the Earth on orbit, which makes the peak of Mount Tai see the direction of sunrise The summer solstice and winter solstice deviations from the north or south of the east about 30 ° angle. That is, the declination of the sun