What is the latitude where the sun does not shine, and what is the latitude where the sun shines dir

LZ is talking about the polar night phenomenon.

Polar day and polar night are unique natural phenomena in the Polar Circle, and the special natural phenomena of polar day and polar night are the result of the rotation of the earth along the inclined axis of the earth. That is to say, when the earth rotates, the earth's axis is inclined to the perpendicular line at an angle of about degrees, so that the earth is in orbit around the sun for 6 months, and one of the poles of the south pole and the north pole is always facing away from the sun; If the South Pole is facing the Sun, the sunlight shines strongly, so the South Pole is all day and no night for half a year; At this time, the North Pole does not see the sun, and the North Pole is all night for half a year, and there is no day. In the next half year, it is the opposite, the North Pole is facing the Sun, and the North Pole is all daytime; At the South Pole, the sun is not visible, and the South Pole is all night.

In areas within the Polar Circle, the length of the polar day and polar night varies depending on the latitude. Polar day: In Antarctica, the phenomenon in which the sun never subsides into the horizon within 24 hours of local time is called polar day.

At the South Pole, half of the year is the polar day; If refraction is taken into account, it should be a little more than half a year. The polar day at the South Pole occurs in the second half of the Southern Hemisphere. Polar Night:

In contrast to the polar day, in Antarctica, the phenomenon that the sun is always below the horizon for 24 hours local time is called polar night. At the South Pole, half of the year should be the polar night; If refraction is considered, it should be less than half a year. The polar night at the South Pole occurs at the exact opposite of the polar day, during the winter in the Southern Hemisphere.

In Antarctica, the duration of the polar day and the polar night becomes shorter as the latitude decreases, and on the Polar Circle, the polar day and the polar night occur for only one day. If the sun shines directly on any hemisphere, the polar day phenomenon will occur near the poles of that hemisphere. The range of the polar day is related to the latitude of the direct solar point, and the latitude difference between its boundary and the pole is the latitude of the direct solar point.

Therefore, after the vernal equinox, there will be a polar day near the North Pole, and the polar day will become larger and larger thereafter; Reaching maximum on the summer solstice, the boundary reaches the Arctic Circle; After the summer solstice, the range of polar days near the North Pole gradually decreases, and it shrinks to 0 on the day of the autumnal equinox. After the autumnal equinox, the polar day appears near the South Pole, and the range of the polar day near the South Pole becomes larger and larger thereafter. Reaching its maximum on the winter solstice, the boundary reaches the Antarctic Circle; After the winter solstice, the range of polar days near the South Pole gradually decreases, reaching 0 on the vernal equinox.

I think the sun should be shining. For example, the Northern Hemisphere is 90 degrees north latitude, and it also has an altitude angle of the sun and a polar day. As the direct point of the sun moves, the height of the sun changes constantly, and it should all shine on the ......

Personal opinion haha

The sun can shine anywhere on the earth, except during the polar nights in the north and south poles.

The Earth is a sphere, the Earth is rotating, and any part of the Earth can be irradiated, unless it is divided into periods!

All latitudes of the year shine.

The spring and autumn equinox has shone at all latitudes.

The latitudes in the Arctic Circle do not shine on the sun during the winter solstice.

During the summer solstice, the latitudes in the Antarctic Circle do not shine on the sun.

Any time to be specifically analyzed...

Number of direct sun rays:

In the north and south latitudes, the sun shines directly once a year.

Between the northern and southern latitudes, the sun shines directly twice a year.

Latitude of the point where the sun shines directly:

Beginning of spring: 0 degrees of latitude.

Beginning of autumn: 0 degrees of latitude.

Summer solstice: Northern latitudes.

Winter solstice: Southern latitudes.

Calculation of the geographical latitude position of the point of direct sunlight on a certain day (r):

The geographical latitude of the direct sun point on a certain day (r) = 23°26 n—r - June 22 * (23°26 *4 365).

Note: This formula can only roughly calculate the latitudinal position of the direct sun point on a certain day of the year;

If the calculation result is positive, it is the north latitude; If it is negative, it is the southern latitude;

r is the date of a certain day, r - June 22 is the number of days that difference between that day and June 22, and (23°26 *4 365) is the latitude distance of the direct point of the sun in one day (assuming that its movement is uniform).

The longitude of the direct point is the meridian with the greatest height of the sun (the middle of the sky on the sun), and the meridian at 12:00 local time;

The latitude of the direct point is the latitude of the sun at noon with an altitude of 90°, and the latitude of the direct point is more than the lowest latitude of the polar day or night. The latitude of the direct point is equal to the height of the solar (or noon sun) of the pole of the polar day.

Categories: Life >> Buying a house is an old sign.

Problem description: I bought a rented house in Nantong, Jiangsu, a 90-meter high-rise building on the right front right of the house, the angle between the location of the high-rise building and the line connecting the house I bought and the east-west line through the location of the house I bought (that is, the straight line in the east-west direction drawn by the house I bought) is about 45 degrees, and the distance between the high-rise building and the house I bought is about 110 meters. What is the shade of my house in this situation? Will it have a big impact?

The geographical latitude of Nantong, Jiangsu Province is about 32 degrees east longitude and 121 degrees north latitude.

Analysis: The relevant regulations are: the building spacing is 0 7 times the height of the building, which is the distance between the buildings and rooms arranged in the north-south direction, and 0 5 times if the east-west direction.

If the height of the front row house is 20 meters, then the rear row house must be 14 meters away from the front row house to meet the requirements. It should be noted that:

1. This 0 7 times refers to the spacing of the first layer, the higher the number of layers, the lower the spacing standard. ?2. With the same spacing, the tower-shaped building is better than the long plank-type building, because the former is shorter, and the situation of blocking each other is slighter, so the ventilation and lighting are better.

Summary. Hello, it's true that the longitude and latitude of the sun shine on the earth every day, because there are also rotational and revolutionary effects.

Hello, it's true that the longitude and latitude of the sun shine on the earth every day, because there are also rotational and revolutionary effects.

What is the same sun shining at the same time on those two days? Is there a normal state of the same? Law.

Where is the same place shining on the earth at the same time for two days? **？

The shadow length is the same.

There is no latitude or longitude correspondingly.

No, every day the angle of her revolution will change, and there will not be the same latitude and longitude. Well.

Summary. Dear dear, it's a pleasure to answer your <>

Whether you can see the shape of the sun or not depends on the latitude. The shape of the Sun is a very perfect spherical shape, but due to the rotation of the Sun and the uneven distribution of its surface temperature, the Sun will be deformed to a certain extent when observed. This deformation is mainly manifested by the slight expansion of the equatorial region of the Sun than the polar region, which is the result of the slight outward expansion of the central position of the Sun as it rotates due to the greater angular velocity experienced by the region farther from the center than the region closer to the center.

Is it related to the shape of the sun and latitude?

I'm in Hebei Province, north of the Tropic of Capricorn, but why is the sun in my northwest direction at the moment?

Dear, it's a great honor to answer your <>

Whether you can see the shape of the sun or not is related to the simplicity of the weft. The shape of the Sun is a very perfect spherical shape, but due to the rotation of the Sun and the uneven distribution of its surface temperature, the Sun will be deformed to a certain extent when observed. This deformation is mainly manifested in the slight expansion of the equatorial region of the sun than the polar region, which is the result of the slight outward expansion of the central position due to the fact that the area farther from the center is subject to greater angular velocity than the area closer to the center when the sun rotates.

<> related extension: The latitude of the sun is related to its rotation speed, because the sun rotates at different speeds, its equatorial rotation period is short, about the group is the sky, and the rotation period of the earth at different latitudes is also different. <>

Therefore<> when observing the sun's equator and other latitudes, it will be found that the distribution of light and dark spots and flare activity of the sun will be affected by the rotation of the sun.

On the summer solstice, the northern hemisphere direct rizui north is the southern edge of the Arctic Circle. In China, Hebei Province is located north of the Tropic of Cancer in Lubei, so the direct point of the sun on the summer solstice is not near this area, but at the northern latitudes. On the other hand, the position of the Sun in the sky depends on the time and the longitude you are in.

We know that the Earth revolves around the Sun 24 hours a week, so the Earth rotates 15 degrees per hour. Longitude, on the other hand, is a parameter used to divide the earth's surface, similar to a grid on the earth's surface, starting from 0 degrees of longitude, which can be calculated both east and west. <>

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When your longitude is significantly different from the longitude of the Sun, the Sun's position in the sky will change accordingly.

Summer falls northwest, Hebei is north of the Tropic of Cancer! The sun is farthest away from the Tropic of Capricorn, how can it run to our north?

Of course not. The Sun shines perpendicular to the equator (zero latitude) only when the Earth is at the spring and autumn equinoxes, and all other dates are tilted. At the summer and winter solstices, the sun shines vertically on the Tropic of Cancer and the Tropic of Capricorn, and the height of the Sun reaches a minimum at the equator.

The zero parallel is the shortest distance between the Earth and the Sun in a straight line, that is, the place where the sun's rays shine directly above. This area goes around a circle, which is a week on the zero degree parallel. However, due to the slight changes in the north and south poles of the earth, the zero degree latitude, that is, the equatorial line, will also have slight changes.

So theoretically, sunlight will always shine perpendicular to this line, but this does not refer to certain places, but to the concept of the equator that follows this law.

No, the winter solstice and summer solstice are not direct rays, and zero latitude is the equator,

Because it's a false proposition.

The northernmost boundary that the sun's light can reach is called the Tropic of Cancer, about 23 degrees north latitude, and when it arrives here, the sun will turn back to the south, although it is only a little missing, but the sun has really not been to 25 degrees north latitude. (Uh-huh, not that the sun doesn't shine at 25 degrees north latitude).

So, judging from this point of view, the "sun at 25 degrees north latitude" is a very strange phenomenon.

Since this sun does not exist, it will not shine anywhere, including 117 degrees east longitude.

The Arctic Circle is full of polar nights, and this one shows the winter solstice in the Northern Hemisphere, with the sun shining directly on the Tropic of Capricorn

Therefore, c