作者名称 国旗国籍

David B. vip

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2019.09.10 11:55
Sunset, also known as sundown, is the daily disappearance of the Sun below the horizon due to Earth's rotation. As viewed from the Equator, the equinox Sun sets exactly due west in both spring and fall. As viewed from the middle latitudes, the local summer Sun sets to the northwest for the Northern Hemisphere, but to the southwest for the Southern Hemisphere.

The time of sunset is defined in astronomy as the moment when the upper limb of the Sun disappears below the horizon. Near the horizon, atmospheric refraction causes sunlight rays to be distorted to such an extent that geometrically the solar disk is already about one diameter below the horizon when a sunset is observed.

Source: Wikipedia
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Comments

  • 归零 2019.09.10 11:57

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  • nie 2019.09.10 12:12

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    OMG!好多生字词!
  • Mariela Bautista 2019.09.10 12:24

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    Thank you David. Very useful your audio.😁👍 Have a nice day✨
  • David B. 2019.09.10 12:24

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    @Mariela Bautista Thank you Mariela!
  • FLObczhz 2019.09.10 12:30

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    awesome!
  • Echo 2019.09.10 13:05

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    l love your voice
  • David B. 2019.09.10 13:15

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    @Echo Thanks. I think I sound a bit tired in this one because I had just woken up.
  • Ailsa 2019.09.10 23:56

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    nice voice
  • John White 2019.09.11 00:17

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    @Mariela Bautista can you say loud for us?
  • John White 2019.09.11 00:17

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    We want to hear your voice

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