How to judge east, west, north and south

Question 1: how to distinguish between east, west, north and south and the sun rising and setting in the west?

Face east, and the right hand side is south! On the left is the north.

Convert the time to a 24-hour clock

Divided by 2 (for example, 18:30 is 9: 15).

Find the corresponding clockwise position (9: 15 is the position with a little more points).

Aim this pose at the sun.

At this time, the direction of the surface 12 point is north.

There are two tips:

1. Look at the road sign. There are road signs at general intersections.

2. Look at the order of house numbers.

The numbering sequence of house numbers is generally determined according to the road direction. The roads are east-west and numbered from east to west; The road is north-south, numbered from south to north; Northeast-southwest, numbered from northeast to southwest; Southeast-northwest, numbered from southeast to northwest. Among them, open spaces should be built on both sides of the road, and an empty number should be reserved according to 3-5 meters; If no space number is reserved when opening a new door, the space number should be attached to the existing house number in order. Odd and even numbers of house numbers are oriented according to the numbering sequence of house numbers, and are numbered in the way of left single and right double.

The second method is suitable for you to determine whether this road is east-west, or north-south. You can determine whether it is east/west (knowing that this road is east-west) or south/north (knowing that this road is north-south) according to the size change of the house number.

Question 2: How to tell the difference between east, west, north and south? If it is during the day, you can look at the sun to help you identify the direction. If the sun rises in the east in the morning, there is one side of the sun, that is, the east. Facing the sun, the right hand side is south. On the left is the north. Behind it is the west. If it is noon, the sun is south. You face the sun and your back faces north. The east is on the left. On the right is the west. If in the afternoon, the sun will set in the west. You face the sun in the west. The left hand side is south. The right hand side is the north. Behind it is the east. At night, if, in summer and winter, you can see the North Star. It's in the northern sky. So, the side facing Polaris is north. Behind it is the south. On the left is the west. On the right is the east. Then you can look at the trees to tell the direction: (it's best to look at more trees to tell) The side with developed leaves is the south. Then, the developed leaves face the south. The east is on the left. On the right is the west. Behind it is the north. So on cloudy days, when we can't see the sun, we also look at the trees to tell the direction. In the season when you can't see the North Star or on a cloudy day, you can always look at the trees and tell the direction.

Question 3: How to distinguish between southeast and northwest? Get up in the morning and face the sun. The front is east, the back is west, the left is north and the right is south.

You can find a stump in the forest and tell the direction according to its annual rings, because its annual rings are always wide in the south and narrow in the weak side; You can observe an independent tree with lush foliage on the south and sparse foliage on the north. You can tell the direction according to the ant's cave. Because most of the female ants' holes face south; Where there are many rocks, you can also find an eye-catching rock to observe. The mossy side of the rock is the north side, and the dry and bare side is the south side. On a starry night, we can tell the direction according to the stars: first find the Big Dipper in the sky, along its "spoon handle", find the sixth and seventh stars, and connect the two stars into a straight line according to the mathematical principle of determining a straight line at two points, and find a brighter Polaris on the extension of this straight line. From the "spoon handle" to the brighter Polaris, it just points out the direction from south to north. If it is in winter, the part of the snow that is difficult to melt always faces north because of the sunlight. In addition, there are temples, pagodas and generals' houses, all facing south, while the gate of the * * * temple taught by * * * faces east. In addition, Polaris is used to judge the direction, the natural wind direction in each season, the surface morphology of desert dunes and so on. The discrimination of direction should be analyzed in detail and judged comprehensively.

On a clear day, according to the sunrise and sunset, you can easily know the east and the west, and you can judge the profile, but it can only be a rough estimate. There are the following methods to determine more accurately:

1, watch direction finding "hours are half of the sun, 12 refers to the north". Generally, you can quickly identify the direction between 9: 00 am and 4: 00 pm, and the direction you point to half the time is facing the sun, and 12 is the north. For example, in the afternoon 14:40, half is 7: 00. Or put a watch, put a stick in the center of the watch to turn the watch, so that the shadow of the stick coincides with the hour hand, and the bisector between the hour and 12 is the north. The earth rotates 360 degrees in 24 hours, so 1 hour is 15 degrees, while the watch rotates 360 degrees is 12 hours, which is 1 times faster than the sun, so that the position can be roughly determined by the watch and the sun. At 6 o'clock in the morning, the sun is in the east and the shadow points to the west. When the hour hand 6 of the dial points to the sun, 12 on the dial points to the west. If the dial is rotated 90 degrees, that is, 6 divided by 2 equals 3, then 3 points to the sun, and at this time 12 refers to the north; Similarly, at noon 12, the sun is in the south. Divide 12 by 2 to get 6,6 points for the sun and 12 points for the north. The disadvantage of this method is that it is best to consider the local time difference and avoid azimuth deviation, but it may be used as a simple judgment of approximate azimuth.

It must be pointed out that:

(1) When judging the direction, the watch should be flat;

(2) In the area between 20 30' south latitude, it is not suitable for use around noon, that is, every 15 plus 1 hour in the east and every 15 plus 1 hour in the west.

The direction of the sun shadow is sunny, and a wooden stick is erected on the ground. The shadow of the stick moves with the position of the sun. These shadows are the shortest at noon, the connecting line at the end is a straight line, and the vertical line of the straight line is the north-south direction.

Draw a series of concentric circles on a piece of 50×50cm drawing paper, with the radius of concentric circles increasing by 1cm, nail them horizontally on a flat plate, and vertically insert a thin steel needle or needle with a length of 12- 15cm on the center of the circle. When the position of the sun changes, the endpoint of the shadow always intersects with the concentric circles. Draw these points, then connect two straight lines on the same circle, and connect the midpoint of these straight lines with the center of the circle. This connecting line is the north-south direction line, and the direction of the arc top is the north.

3. Night Star

At night, you can judge the direction according to Polaris and Southern Cross.

1, Polaris is located in the northern sky, and its exposed altitude angle is equivalent to the local latitude. Based on this, you can find Polaris quickly. Usually according to the Big Dipper (Ursa Major) or the W Star (Fairy Queen).

The Big Dipper is seven bright stars, shaped like a spoon. The place where the two β -α directions of the spoon extend about 5 times is Polaris.

When you can't see the Big Dipper, you can look for the North Star according to the constellation W after Fairy.

Cassiopeia consists of five bright stars, shaped like a "W" letter, and the distance between the opening direction and the opening width of the letter is about twice that of Polaris.

2. Southern Cross

In the area south of 23 30' north latitude, at night ... >>

Question 4: How to use Baidu map to see the actual east, west, north and south? Baidu map has several display states, and the specific display is also related to whether there is an electronic compass on the mobile phone.

On the mobile phone equipped with electronic compass, you can click the positioning button in the lower left corner to change one display mode at a time, one of which is the same as now, and the east, west, north and south on the map are the same as the east, west, north and south on the scene.

On a mobile phone without an electronic compass, the map has no in-situ consistency function. It can only be up north, down south, left west, right east. When navigating, the forward direction is displayed at the top.

Question 5: How to quickly distinguish between East, West, North and South? Take the sun as a reference: In the morning, the sun is in front of your right hand and the East is in front of you. At noon, the sun is behind your hands (behind your body) and the north is in front of you. In the afternoon, the sun is in front of your left hand and the west is in front of you. At noon, the sun is in front of your hands (in front of your body), and your face is south.

Question 6: How to distinguish between East, West, North and South in the simplest way? 1. After the compass determines the position, it faces the north, that is, it knows: up north, down south, left west, right east. ; 2. These measuring tools, such as compass and total station, all have the function of indicating the direction. If there is no tool to indicate the direction, you can see where the sun is. In the morning, you can point your right hand in the direction of the sun, and then it is: left west right east, up (front) north, down (back) south. The afternoon is just the opposite.

Question 7: How to distinguish between East, West, North and South? Polaris means due north, contrary to due south, 90 degrees to the left is due west, and 90 degrees to the right is due east.

Question 8: How does Baidu map judge that the direction of the east, west, north and south pointers is north?

Question 9: How to tell the east, west, north and south directions? Do you have a watch at 5 o'clock ~

This is what my teacher told me. He is a member training class of the International Mountaineering Club.

Generally, there should be no room, but this method is very accurate.

Point the hour hand to the sun, and the opposite direction to the center of the included angle between the pointer and the minute hand is north.

Note: If it is 9: 25, point the pointer at the sun, and you can see that the bisector between 9: 00 and 25: 00 is almost north. You can confirm it first.