write in brief about the daytime in the areas between the polar circles and the poles
Answers
Answer:
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′47.7″ N, and the Antarctic Circle is located at a latitude of 66°33′47.7″ S.[1]
Areas inside each polar circle and its associated pole (North Pole or South Pole), known geographically as the frigid zones, would theoretically experience at least one 24-hour period when the center of the sun is continuously above the horizon and at least one 24-hour period when the center of 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 (a difference of 1 second of arc in the tilt is equivalent to change of about 31 metres north or south in the positions of the polar circles on the Earth's surface).
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The polar circles have 24hr of sun and darkness in both the hemisphere.
Explanation:
- A polar circle is a term used for larger areas around the north and south polar regions and they comprise of the massive circular areas along the arc line to arctic and the antarctic circle. On earth its located at a 66°33′ N and antarctic circle located at 66°33 S.
- The length of the day varies from the time of the year and the latitude in which one is located as the tilt in the earth, areas that above the arctic circle experience 24 hours of daylight in the northern hemisphere in summers and 24 hr of darkness in the winter seasons.
- The reverse is true for the antarctic circle. Through the intensity of the sun is less in the arctic than in temperate or tropical areas.
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- brainly.in/question/11281518 answered by Sakshigupta123446.