What does a compass do? How to measure the strike of rock stratum: the strike of rock stratum is the direction of the intersection of rock stratum and horizontal plane. When measuring, the bottom edge of the long side of the compass is close to the rock stratum, and when the bubble of the circular level is in the middle, read out the degree indicated by the compass (because the strike line is a straight line, its direction can extend to both sides, so you can read out the north and south needles). Measurement of stratum dip angle: stratum dip angle refers to the orientation of the projection of the maximum dip line (true dip line) downward of the stratum on the horizontal plane. When measuring, point the northern end of the compass to the downward inclined direction of the rock stratum, and the short side of the southern end leans against the rock stratum. When the bubble of the circular level is in the center, read the degree indicated by the compass. Measurement of rock dip angle: Rock dip angle refers to the maximum included angle between bedding plane and imaginary horizontal plane, which is called true dip angle. The true dip angle can be measured along the true dip line of the layer. If the dip angle measured along other dip lines is less than the true dip angle, it is called apparent dip angle. When measuring, stand the compass sideways so that the long side of the compass is close to the stratum. Move the adjustable wrench outside the chassis with the middle finger of the right hand and move the compass along the stratum at the same time. When the bubble of the tubular level is centered, the maximum degree pointed by the inclinometer pointer is the true dip angle of the stratum. If the inclinometer is a hanging hammer compass, the method is basically the same as above, except that the middle finger of the right hand presses the button outside the cabinet, and the hanging hammer swings freely. When it reaches the maximum value, loosen the middle finger and hang a hammer to fix the indicating reading, that is, the true dip angle of the rock stratum. If the azimuth compass is used to record the occurrence of rock strata, and it is found that the strike, dip and dip of a certain stratum are 330, 240 and 50 respectively, it is recorded as 330/SW ∠ 50 or 240 ∠ 50 (that is, only dip and dip can be recorded). If the azimuth compass is used to measure but the quadrant angle is used to record, the azimuth angle should be converted into quadrant angle and then recorded. As for the occurrence of the above strata, the strike should be γ = 360-330 = 30, and the dip angle β = 240- 180 = 60. Its appearance can be recorded as N30 W/SW ∠ 50 or directly as S60W∠50. When the occurrence elements are marked on the geological map or plan, they need to be represented by symbols and dip angles. First, find out the location of the measuring point on the map, draw a short straight line (4mm) at this point according to the measured stratum strike, then draw a short vertical line (2mm) at the middle point of the line segment according to the strike of stratum dip, and then mark the dip value at the lower right of the symbol.
What's the use of Feng Shui compass? A compass is actually a compass. Compass, okay? It means north and south. Eight diagrams, yin and yang, five elements, money sharing, special doors, date selection and so on have been added to the compass. They are all good and bad information for Feng Shui master to analyze and refer to Feng Shui. Such as desanding, water absorption, orientation and vertical orientation. Gron, Shui Ge, choose a day. Wait a minute. Not so mysterious.
Compass besides feng shui, what else can you do with a compass to get lucky? If the house is washed out or the configuration inside and outside the house is not good, and the house gets along badly, and the conditions do not allow it to move, you can use the compass to transform the lost face of the house to save the day. E. the way to make money is to put the compass in the living room, and its effect is effective. The earth belongs to god, and the small compass is put in the incense burner. The compass should be adjusted to point north in front and guide behind. The gods belong to the gods, and the compass below should be adjusted to point forward to the north.
A compass can be placed under the shrine, behind the statue, or on the coffee table of the statue, which can greatly enhance the blessing of the gods and make the town house safe. The compass town magic u hangs the compass directly at home, office, business office, entrance of evil party or channel, room, bright place, the house is safe and it is good to avoid evil spirits.
If the yin in the house is too heavy, someone will go to hell, the child is screaming for no reason, or the house is sitting in the direction of the empty divination line, and so on. You can put the compass in the house and lay it flat in the corner to avoid evil spirits in the town house. Compass Town House Law (2): Compass can be placed under the shrine, behind the idol, or under the coffee table of the idol, which can greatly enhance the blessing of the gods and make the town house safe; Compass turns evil into right: hang the gossip compass directly on the evil side or at the door to avoid evil and make the whole family safe.
What was the ancient compass for? The compass is the operating tool of the Richie Sect. It is mainly composed of a magnetic needle and a series of concentric circles located in the center of the disc. Each circle represents the ancient China people's understanding of a certain level of information in the cosmic system. The ancients in China believed that man's gas field was controlled by the gas field of the universe, that harmony between man and the universe was auspicious, and disharmony between man and the universe was fierce. So, by experience, they put all levels of information in the universe, such as the stars in the sky, everything represented by the five actions on the earth, heavenly stems and earthly branches and so on. , all on the compass. Geomantic omen is to find the most suitable position or time for a specific person or thing through the rotation of a magnetic needle. Although the concept of "magnetic field" is not mentioned in geomantic omen, the coordination of the directions, orientations and intervals of each layer on the compass implies the law of "magnetic field". The invention and application of the compass is the result of human beings' continuous exploration of the mysteries of the universe, society and life. More and more circles and more complex pointer systems on the compass represent the accumulated practical experience of human beings. Of course, whether these experiences are comprehensive and correct needs further study, but the information marked on the compass contains a lot of ancient China wisdom.
What's the use of ancient compasses? The ancestor of the compass appeared in the Warring States period. It is made of natural magnets. It looks like a spoon with a round bottom, which can be balanced on a smooth "field" and can rotate freely. When it is at rest, the handle of the spoon will point to the south. The ancients called it "Sina", and in the book Han Feizi at that time, there was: "Wang Li Sina took the time first." "Sooner or later" means square, east. Guiguzi recorded the application of Sina, and Zheng people took Sina with them when picking jade to make sure they didn't get lost. In the Spring and Autumn Period, people can grind nephrite and jadeite with hardness of 5-7 degrees into various shapes, so they can also use natural magnets with hardness of only 5.5-6.5 degrees to make SiNa. In the book Lun Heng, Wang Chong of the Eastern Han Dynasty made a clear record of the shape and usage of Sina. Sina is made of a whole natural magnet after pondering. The handle of the spoon is guided by the pole, so that the center of gravity of the whole spoon falls right in the middle of the bottom of the spoon. The spoon is placed in a smooth field, surrounded by a four-dimensional stem and branches, which synthesize 24 directions. This design was completed through long-term research after the ancients carefully observed many phenomena related to magnetism in nature and accumulated a lot of knowledge and experience. The appearance of Sina is the practical application of people's understanding of the polarity of magnet fingers. However, Sina also has many defects. Natural magnets are hard to find, and they are easy to lose their magnetism when they are impacted and heated during processing. Therefore, Sina's magnetism is relatively weak, and the contact with the site should be very smooth, otherwise it will be difficult to rotate because of too much friction and resistance, and the expected guiding effect will not be achieved. Moreover, Sina has a certain volume and weight, which is inconvenient to carry, which may be the main reason why Sina has not been widely used for a long time. Sina consists of a bronze disc and a magnetic spoon made of a natural magnet. The bronze disc is engraved with 24 directions, and the magnetic spoon is placed on the central circular surface of the disc. When it is at rest, the tail of the spoon points to the south.
Please accept it, thank you!
What does the geomantic compass do at night? Feng shui and magic are tricks, and they can't fundamentally change fortune. There is only one way to be lucky all your life, that is, to do more good deeds and accumulate virtue. When virtue accumulates to a certain extent, good luck will always accompany you. At this time, if we continue to do good deeds, the hidden virtues will accumulate more and more, which will not only bring good luck to ourselves, but also bring infinite good luck to future generations.
What is the principle of compass application? Structure of compass;
There are many kinds of compasses, but their structures are similar, and they are all composed of magnetic needles, dials, alidades and other main accessories. The octagonal compass (below) commonly used in geological work, the magnetic needle is made of artificial magnet, and the center is equipped with a concave circular shaft seat inlaid with agate, so that it is supported on the steel thimble in the center of the dial and can rotate freely sensitively. When the magnetic needle swings and stands still, its northern end points to the magnetic north direction; When stopping use, the magnetic needle should be held up by the brake to make it fixed. When using a compass, the magnetic needle is not horizontal due to the influence of magnetic inclination, but the northern end of the magnetic needle inclines downward, because China is located in the northern hemisphere. The closer to the poles, the greater the downward inclination of the pointer. The downward inclination of the magnetic needle is not convenient for practical operation, so all countries in the northern hemisphere wind copper wire at the southern end of the magnetic needle of the compass to keep the magnetic needle in a horizontal state.
The dial of the compass is made of copper or aluminum. Generally, the minimum dividing value is 1, and it is marked counterclockwise from 0 to 360, so as to directly read the magnetic orientation. In addition, there is a correction screw on the dial. Rotate it, and the dial will rotate accordingly, which can correct the reading of the dial (used to correct the magnetic declination and directly display the true north direction).
The sighting equipment is a pair of folding plates installed in the direction of 0 ~ 180, which is used in conjunction with the reflector installed on the box cover. The chassis is also equipped with a circular level, a pipeline level and an inclination indicator. A circular level is used to keep the dial level. The bottom surface of the compass box is equipped with a handle for operating the inclinometer. Rotating the handle can make the level gauge and inclinometer rotate at the same time for measuring the inclination angle.
Methods for measuring azimuth and inclination:
First, the compass should be corrected according to the local magnetic declination, and then observation should be made. When the elevation angle of the observed target is less than 45 or the depression angle is less than15, the target can be seen from the mirror. At this time, place the reed plate vertically, hold the compass against the abdomen of the observer with both hands, aim the tip of the reed plate at the target, center the bubble of the circular level until the image of the long reed plate and the target is equally divided by the mirror center line at the same time, and then press the northern end of the magnetic needle. When the depression angle of the target is greater than15, it is difficult to see the image of the target in the mirror by the above method. At this time, turn the compass to 180, aim the scale line of 180 at the target, and let the bubbles of the circular level pass through the center line of the transparent elliptical hole below the reflector for aiming. But at this time, it should be noted that the orientation should be read according to the southern end of the magnetic needle. Open the compass cover to make it on the same plane as the compass body, use the outer side wall of the compass with scale and inclination indicator in the compass box to be parallel to (or close to) the surface of the measured object (usually rock stratum), and turn the handle of inclination indicator to center the bubble of the pipe level. The scale displayed at this time is the inclination of the measured object.
Site fixed-point method:
(1) When the accuracy requirement is not very high (in small-scale mapping or rough surveying), the fixed point can be determined by visual estimation method, that is to say, the position of the measuring point on the topographic map can be judged by naked eyes according to the relationship between the distance and orientation of the terrain around the measuring point and the features.
When using the visual inspection method, firstly, orient the topographic map with the compass on the observation point, that is, the long side of the compass leans against the east or west border of the topographic map, and move the topographic map and the compass as a whole to align the compass with the O degree of the dial. At this time, the true north direction above the frame is consistent with the true north direction of the observation point, that is, the southeast and northwest directions of the topographic map are consistent with the southeast and northwest directions of the site. At this time, the extension direction of some linear features such as rivers and highways should be parallel to the rivers or highways marked on the topographic map.
After the topographic map is oriented, pay attention to find and observe the topographic features that are easy to find on the map around the observation point, and estimate their relative positions (such as direction and distance, etc.). ) and observation points, and then find out the position of observation points on the topographic map according to this relationship and mark them on the map.
(2) In the geological work with a slightly larger scale, if the accuracy is required to be high, the intersection method is needed.
First of all, the topographic map should be oriented (the method is the same as the visual method)
Then find three known points that are not in a straight line and have been displayed on the topographic map near the observation point, such as triangle points, hilltops and buildings. , and use a compass to measure the direction of the observation point respectively. At this time, the opposite panel of the compass is facing the observer (because the position set by the observer is unknown), erect the small hole of the chopping block, and trace the selected triangle point or hill through the middle line of the small hole and the reflector. When the three points are in a straight line and the bubble is in the middle, read the readings pointed by the compass, that is, in what direction the observation point is located, and record the positions of the three survey lines.
Find the known points on the map, draw them with a protractor and draw them in ... >>
What does a friend's compass do? Compasses are generally used in geomantic omen, which can be used to determine the location of yin points, and can also be used for town houses, lucky, evil spirits and so on.