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Usually, the term sky informally refers to a perspective from the Earth's surface; however, the meaning and usage can vary. An observer on the surface of the Earth can see a small part of the sky, which resembles a dome (sometimes called the sky bowl) appearing flatter during the day than at night. [1]
Sky conditions are estimated in terms of how many eighths of the sky are covered in cloud, ranging from 0 oktas (completely clear sky) through to 8 oktas (completely overcast). In addition, in the SYNOP code there is an extra cloud cover indicator '9' indicating that the sky is totally obscured (i.e. hidden from view), usually due to dense fog ...
1. A narrow stretch of land with water on each side, e.g. an isthmus or promontory. [4] 2. A narrow stretch of woodland or of ice. [4] 3. A high level pass, especially the narrowest part. [4] nehrung A long sandspit separating a haff or lagoon from the sea, especially one along the south coast of the Baltic Sea. [4] neighborhood
[1] degree day Deviation of one-degree temperature for one day from an arbitrary standard, usually the long-term average temperature for a place. [2] dell A small, secluded hollow, usually within a grassy, park-like, partially wooded valley. delta A landform at the mouth of a river where the main stem splits up into several distributaries. It ...
On any given (sidereal) day/night, a celestial object will appear to drift across, or transit, the observer's upper meridian as Earth rotates, since the meridian is fixed to the local horizon. At culmination , the object contacts the upper meridian and reaches its highest point in the sky.
The days are short and the nights are long. That can only mean one thing: The winter solstice is coming. The first day of winter for the northern hemisphere of Earth will begin on Dec. 21 at ...
The ancient Greeks assumed the literal truth of stars attached to a celestial sphere, revolving about the Earth in one day, and a fixed Earth. [9] The Eudoxan planetary model , on which the Aristotelian and Ptolemaic models were based, was the first geometric explanation for the "wandering" of the classical planets . [ 10 ]
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