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What will we see in Autumn Equinox

 From:互联网 
On the day of Autumnal Equinox, three interesting phenomena occur.

On the day of Autumnal Equinox, three interesting phenomena occur:

1. The sun shines directly on the equator, with the result that the sun can be seen at the northern and southern poles at the same time and the two poles share the same length of day and night.

2. At the 45 degrees north of the latitude line, you don’t have to climb a building to measure its height. All you have to do is to measure the length of the shadow, because its shadow will be the same length as the building.

3. Standing at the equator, you cannot see your shadow, because it is directly beneath your feet. In fact, no object can find its shadow.

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  [Editor:土方方   2013/09/27/]
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