In North and south poles there is 6 months day and 6 monthes night ?
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Answer:
Well, it is not six months, but at the poles there will be 77 days of total darkness in a year. The Sun does not rise and set at the poles as it does above and below the equator; it rises and sets just once in a year.
The Sun’s path in the sky is in a belt 23.50° above and below the equator. On account of this, sunlight in the polar regions is never overhead; it is at a very low angle. The seasons are caused by Earth's tilt. As Earth orbits the Sun, for roughly six months during the year, the northern or southern axis - the poles- are tilted towards sun. During these times, the hemisphere tipped toward the Sun experiences summer, while the hemisphere tilted away from the sun experiences winter. At lower latitudes, the axis is not tilted toward or away from the sun, and so seasons like spring and autumn are experienced.
In the polar regions - 66.50° above and below the equator - the Sun does not ‘rise’ or ‘set’ as it does in the other regions. Afterall, at the North pole, all directions point to south, and at the South Pole, all directions point to north. Therefore, the Sun appears to go 360° around the poles. So when the tilt is away from the Sun, the Sun will not be seen at all. The Sun will be seen only when the tilt is towards the Sun. Effectively, the Sun rises and sets only once in a year.
Then there is twilight to be considered. Just like in other areas of the Earth, twilight illuminates the sky to some extent even though the sun's is below the horizon. When it is less than 6° below the horizon, it is known as Civil Twilight because there will be so much light that daytime outdoor activities can be continued. When the Sun is less than 18° below the horizon, it is Astronomical Twilight beyond which the sky will be totally dark..
In the arctic region, when the Sun dips below 6° around Oct. 25th, the twilight continues, but it will not be as bright as the civil twilight. This is known as Nautical twilight and this continues till the Sun reaches 12° below horizon when it will be almost dark - starting the astronomical twilight period. Eventually all twilight ends by November 13th after which it will be totally dark. Total darkness continues till 29th of January when again the twilight starts – and runs in reverse order – astronomical, nautical, and civil twilight.
On the same lines, there will be no nights in the Arctic region between March and June when the Sun does not go below the horizon at all.
Watch this video:
In the Antarctic region, the 77 days of total darkness occurs between May and August.
Which country or city has a 6-month night and a 6-month day?
Why are there 6 months of darkness and 6 months of daylight at the poles?
Why do poles have sunshine for six months, and night for another six months in a year?
Why did the polar region have six months of day and six months of night?
Which countries in the world have 6 months of day and night?
That is because the Earth's axis is tilted away from the perpendicular to Earth's orbital plane. The axis always points (more or less) in the same direction in space. However, relative to the Sun, the tilt direction varies, as the Earth orbits the Sun. Each pole tilts towards the Sun for half the year then away from the Sun for the other half of the year. This affects the whole planet, but the effect is most extreme at the poles. At the poles, there are about six months of daylight followed by about six months of night.
An important fact that is sometimes not clearly stated is that, at the poles, the Earth's rotation does not cause the Sun to rise or set. In fact, the Sun's apparent daily motion is (almost exactly) parallel to the horizon all the time.
However, the Sun does rise and set at the poles, at intervals of 6 months. That’s because the distance of the Sun above and below the horizon varies during the year, as the Earth orbits the Sun. Diagrams showing how the Earth’s orbit affects the amount of sunlight at the poles are given in the link below.
Due to refraction by the Earth's atmosphere, the Sun can still be seen for a few days when it's just below the horizon. Also, the Sun moves only very slowly below the horizon as winter approaches, so there is quite a long period of twilight at the poles. It depends on which definition of "twilight" you use, but twilight is usually said to last for about 2 weeks at the poles. The same thing happens as the Sun is ready to rise above the horizon in the springtime. So there is about a month of twilight in total. So really the poles are in proper darkness for a bit less than 5 months of the year. In fact, the length of time when the North pole has no twilight of any kind (strictly defined) is no more than 11 weeks. That’s less than 3 months!
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Answer:
Hey friend,
Here is the answer you are searching for,
Yes friend, you are absolutely right. It happens because poles don't receive light of the sun.
