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arXiv 1107.0836astro-ph.IMphysics.hist-ph
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在月食期间测量地球-太阳距离

Measuring the Earth-Sun distance during a lunar eclipse

Costantino Sigismondi

摘要:

经典的方法来衡量地球与太阳的距离是由于阿里斯塔克斯和它是基于角度的测量月球地球太阳时,月球是完全正交的。这样的角度只比90度小9角分,而且很难评估,因为必须直接看向太阳。地月距离和地球直径是推导天文单位值的必要因素。这种方法也需要知道月球的距离和地球的直径,但它可以允许更精确地测量所涉及的角度。

英文摘要:

The classical method for measure the Earth-Sun distance is due to Aristarchus and it is based upon the measure of the angle Moon-Earth-Sun when the Moon is exactly in quadrature. Such an angle is only 9 arcminutes smaller than 90 degrees, and it is very difficult to evaluate, being necessary to look directly towards the Sun. The distance Earth-Moon and the Earth's diameter are necessary ingredients in order to derive the value of the astronomical unit. This method requires also the knowledge of the Moon's distance and the Earth's diameter, but it can permit a more precise measurement of the involved angles.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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