What does polar circle mean?
Definitions for polar circle
po·lar cir·cle
This dictionary definitions page includes all the possible meanings, example usage and translations of the word polar circle.
Princeton's WordNet
polar circlenoun
a line of latitude at the north or south poles
ChatGPT
polar circle
A polar circle refers to the imaginary geographical boundaries in each hemisphere of the Earth where the Sun does not set on the summer solstice or rise on the winter solstice. There are two polar circles: the Arctic Circle in the Northern Hemisphere and the Antarctic Circle in the Southern Hemisphere. The location of these circles changes slightly due to the tilt of the Earth's axis.
Wikidata
Polar circle
A polar circle is either the Arctic Circle or the Antarctic Circle. On Earth, the Arctic Circle is located at a latitude of 66° 33′ 44″ N, and the Antarctic Circle is located at a latitude of 66° 33′ 44″ S. Areas between each polar circle and its associated pole, known geographically as the frigid zones, would theoretically experience at least one 24 hour period when the sun is continuously above the horizon and at least one 24 hour period when the sun is continuously below the horizon annually. However, due to atmospheric refraction and the Sun being an extended object rather than a point source, the continuous daylight area is somewhat extended while the continuous darkness area is somewhat reduced. The latitude of the polar circles is 90 degrees minus the axial tilt of the Earth's axis of daily rotation relative to the ecliptic, the plane of the Earth's orbit. This tilt varies slightly, a phenomenon described as nutation. Therefore the latitudes noted above are calculated by averaging values of tilt observed over many years. The axial tilt also exhibits long-term variations as described in the reference article.
Matched Categories
Numerology
Chaldean Numerology
The numerical value of polar circle in Chaldean Numerology is: 2
Pythagorean Numerology
The numerical value of polar circle in Pythagorean Numerology is: 4
Translations for polar circle
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"polar circle." Definitions.net. STANDS4 LLC, 2024. Web. 26 Apr. 2024. <https://www.definitions.net/definition/polar+circle>.
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