What is the use of a compass?
What is the use of a compass? 30 points. The compass is divided into the Feng Shui compass in the past and the current digital compass, but in general it is an instrument that uses the earth's magnetic field to determine direction.
What does a compass do? How to measure the direction of the rock layer: The direction of the rock layer is the direction of the intersection line between the rock layer and the horizontal plane. When measuring, place the bottom edge of the long side of the compass close to the rock layer. Use it as a circular level. When the bubble is in the center, it reads north or the degree pointed by the compass is what you want (because the trend line is a straight line and its direction can extend to both sides, it can be read as either a south or a north needle). Measurement of rock formation inclination: Rock formation inclination refers to the direction of the projection of the maximum downward inclination direction line (true inclination line) of the rock formation on the horizontal plane. When measuring, point the north end of the compass toward the downward sloping direction of the rock formation, and place the short edge of the south end against the rock formation. When the bubble of the circular level is in the center, read the degree pointed by the north needle. Measurement of rock formation inclination angle: The rock formation inclination angle refers to the maximum angle between the layer and the imaginary horizontal plane, which is called the true inclination angle. The true inclination angle can be measured along the true inclination line of the layer. If the inclination angles measured along other inclination lines are smaller than the true inclination angle, it is called the apparent inclination angle. When measuring, stand the compass on its side so that the long side of the compass is close to the layer. Use the middle finger of your right hand to turn the adjustable wrench on the outside of the chassis and move the compass along the layer. When the bubble of the tubular level is in the center, the maximum degree pointed by the inclinometer pointer is the degree of the rock formation. What a dip. If the inclinometer is a pendulum-weight compass, the method is basically the same as above. The difference is that the middle finger of the right hand presses the button outside the chassis, and the pendulum weight swings freely. When it reaches the maximum value, release the middle finger and the pendulum weight is fixed. The reading on the finger is the true dip angle of the rock formation. The method of recording the occurrence of rock formations is, for example, using an azimuth compass to measure, and it is measured that the trend of a certain formation is 330°, the inclination is 240°, and the inclination angle is 50°. It is recorded as 330°/SW∠50°, or recorded as 240°∠50°. (That is, just remember the inclination and inclination angle). If you use an azimuth compass to measure but want to record the quadrant angle, you need to convert the azimuth angle into a quadrant angle and then record it. As shown in the above formation, its trend should be γ=360°-330°=30°, and its tendency should be β=240°-180°=60°. Its occurrence is recorded as N30°W/SW∠50°, or it can be directly recorded as S60W∠50. When marking occurrence elements on a geological map or plan map, symbols and dip angles must be used. First, find the position of the measured point on the map. At this point, draw a short straight line (4mm) according to the direction of the measured rock layer to represent the direction. Then, according to the direction of the rock layer tendency, draw a short vertical line (2mm) at the midpoint of the line segment to represent the direction. Inclination, then label the inclination value to the lower right of the symbol.
What is the use of Feng Shui compass? A compass is actually a compass. Compass understand? It's pointing south and north. The compass surface is also added with the Bagua Yin Yang and Five Elements, the contents of dividing gold, odd doors, choosing the day, etc. They are all for Feng Shui masters to analyze and refer to the good and bad information of Feng Shui. Such as sand elimination, water absorption, orientation, and vertical orientation. Gelong, Geshui, choose the day. etc. Not much mystery.
In addition to Feng Shui, what other uses of the compass to bring good fortune? If there is a bad luck inside or outside the house, or poor configuration, etc., the house will be in a very bad situation, and relocation is not allowed due to conditions. , you can use the compass to change the bad aspects of the house and turn bad luck into good luck. E. The way to prosper wealth is to place the compass at the financial position in the living room, and its effect is effective. The earth belongs to the earth god. The small compass should be placed in the incense burner. The compass should be adjusted so that the front points to north and the rear points to north. The statue belongs to the god of heaven. The compass below should be adjusted so that the front points to north and the rear points to north.
The compass house-keeping method can be placed under the shrine, or behind the statue of the god, or on the lower level of the coffee table with the statue of the god, which can greatly enhance the blessing power of the gods and help stabilize the house and house. The method of compass suppressing evil spirits is to hang the compass directly in your home, office, commercial place, at the place where evil spirits occur, or at the entrance of a passage, in a room, in a brightly lit place, and your home will be safe, and you will seek good luck and avoid evil.
If the yin energy in the Yang house is too strong, someone is seeing ghosts, children are yelling for no reason, or the house is in the direction of the void hexagram line, etc., you can place the compass in the house regardless of the direction, and lay it flat. The corner of the wall can achieve the purpose of guarding the house and avoiding evil; Compass House Guarding Method (2): You can place a compass under the shrine, or behind the statue of the god, or placed on the lower level of the coffee table of the statue of the god, which can greatly enhance the blessing of the gods. Strength, the effect of calming down the house and settling the house; the compass method of dispelling evil spirits: hang the Bagua compass directly on the evil side or at the door to seek good luck and avoid evil, and the whole family will be safe.
What is the ancient compass used for? The compass is the operating tool of Liqi Sect. It mainly consists of a magnetic needle located in the center of the disk and a series of concentric circles. Each circle represents a certain level of information in the universe system that the ancient Chinese believed. understanding. The ancient Chinese believed that a person's aura is controlled by the aura of the universe. If a person is in harmony with the universe, it is good, and if he is not in harmony with the universe, it is bad. Therefore, based on their experience, they put all the information at all levels in the universe, such as the stars in the sky, everything on the earth represented by the five elements, the heavenly stems and the earthly branches, etc., on the compass. Feng shui masters use the rotation of magnetic needles to find the best location or time for a specific person or specific thing. Although the concept of "magnetic field" is not mentioned in Feng Shui, the coordination of the directions, orientations, and intervals between the circles on the compass implies the laws of "magnetic field". The invention and application of the compass are the result of mankind's continuous exploration of the mysteries of the universe, society and life. The increasing number of circles and the increasingly complex pointer system on the compass represent the continuous accumulation of practical experience of mankind. Of course, whether these experiences are comprehensive and correct remains to be further studied, but the information marked on the compass contains a lot of ancient Chinese wisdom.
What are the uses of ancient compasses? The ancestor of the compass appeared around the Warring States Period. It is made of natural magnet. It looks like a spoon with a round bottom. It can be placed on a smooth "land" and maintain balance, and it can rotate freely. When it is at rest, the handle of the spoon will point south. The ancients called it "Sinan", and the book "Han Feizi" at that time said: "The king established Sinan to end the day and night." "Duanzhaoxi" means to make the four directions and determine the direction. "Guiguzi" records the use of Si Nan. The people of Zheng took Si Nan with them when picking jade to ensure that they would not lose their way. In the Spring and Autumn Period, people were able to carve nephrite and jadeite with a hardness of 5 to 7 degrees into various shapes of utensils, so they could also make natural magnets with a hardness of only 5.5 to 6.5 degrees into sinan. Wang Chong of the Eastern Han Dynasty made a clear record of the shape and usage of Sinan in his book "Lunheng". Sinan uses a whole piece of natural magnet to make a spoon shape. The handle of the spoon refers to the pole, and the center of gravity of the entire spoon falls exactly in the middle of the bottom of the spoon. The spoon is placed on a smooth ground, which is square on the outside and round on the inside. There are four dimensions of stems and branches, forming twenty-four directions. This kind of design was completed after long-term research after the ancients carefully observed many phenomena related to magnetism in nature, accumulated a lot of knowledge and experience. The emergence of Sinan is a practical application of people's understanding of the polarity of magnets. However, Sinan also has many shortcomings. Natural magnets are difficult to find and are prone to loss of magnetism due to impact and heat during processing. Therefore, Sinan's magnetism is relatively weak, and its contact with the ground must be very smooth, otherwise it will be difficult to rotate due to excessive rotational frictional resistance, and the expected guiding effect cannot be achieved. Moreover, Sinan has a certain size and weight and is very inconvenient to carry. This may be the main reason why Sinan has not been widely used for a long time. Sinan consists of a bronze plate and a magnetic spoon made of natural magnets. The bronze plate is engraved with twenty-four directions. The magnetic spoon is placed on the central circular surface of the plate. When stationary, the tail of the spoon points south.
Please adopt it, thank you!
What is the role of the Feng Shui compass at night? Fortune-telling, Feng Shui, spells and other things are all small tricks, and they cannot fundamentally change your destiny. If you want to have good luck throughout your life, there is only one way, and that is to do a lot of good deeds and accumulate negative virtues. When you accumulate enough negative virtues to a certain extent, good luck will always be with you. At this point, if you continue to do good deeds, your yin virtues will accumulate more and more. Not only will you have good luck, but you will also bring unlimited good luck to your descendants.
What principles are used in compasses? The structure of compasses:
There are many types of compasses, but their structures are similar. They are all composed of main accessories such as magnetic needles, dials and sighting equipment. The octagonal compass (picture below) commonly used in geological work has a magnetic needle made of artificial magnets with a concave circular shaft socket inlaid with agate in the center so that it can be supported on the steel thimble in the center of the dial and can rotate freely and flexibly. . When the magnetic needle swings to a standstill, its north end points to the magnetic north direction; when it is stopped, the magnetic needle should be held up by the brake to fix it. When using a compass, due to the influence of magnetic inclination, the magnetic needle is not horizontal, but the northern end of the magnetic needle tilts downward. This is because our country is located in the northern hemisphere. The closer you get to the poles, the greater the downward tilt of the magnetic needle. The downward tilt of the magnetic needle is very inconvenient for actual operation. Therefore, in countries in the northern hemisphere, copper wire is wound around the southern end of the magnetic needle of the compass to balance the force on the magnetic needle and keep it in a horizontal state.
The compass dial is a disc made of copper or aluminum. Generally, the minimum division value is 1°, and it is marked counterclockwise from 0° to 360° to facilitate direct reading of the magnetic azimuth angle. In addition, there are correction screws attached to the dial. If you turn it, the dial will rotate accordingly, which can correct the dial reading (used to correct the magnetic declination to directly display the true north direction).
The sighting device is a pair of folding target plates installed in the direction of 0° to 180°, used in conjunction with the reflector installed on the lid of the box. The chassis is also equipped with a circular level, tube level and tilt indicator. The circular level is used to keep the dial level. The bottom surface of the compass box is equipped with a handle for controlling the inclinometer indicator. Turning the handle can cause the tube level and the inclinometer indicator to rotate simultaneously for use when measuring inclination angles.
Measurement of azimuth and inclination:
First, correct the compass according to the local magnetic declination, and then conduct observations. When the elevation angle of the observation target is less than 45° or the depression angle is less than 15°, the target can be seen from the reflector. At this time, put the target plate up, hold the compass with both hands, close to the observer's abdomen, and align the tip of the target plate. target, and center the bubble of the circular level until the images of the long target plate and the target are bisected by the center line of the mirror at the same time, then the azimuth angle can be read by pressing the north end of the magnetic needle. When the target depression angle is greater than 15°, it is difficult to see the target image in the mirror using the above method. At this time, the zero direction of the compass should be turned 180°, the 180° scale line should be facing the target, and the bubble of the circular level should be reflected Aim with the centerline of the transparent oval hole under the mirror. But you should pay attention at this time: press the south end of the magnetic needle to read the azimuth angle. Open the compass cover to the same plane as the compass body, and use the outer side wall of the compass with the scale and inclinometer in the compass box to be parallel to (or close to) the surface of the object to be measured (usually a rock formation) , turn the handle of the inclinometer indicator to center the bubble of the tube level. The scale displayed at this time is the inclination angle of the measured object.
Field fixed-point method:
(1) When the accuracy requirements are not very high (when small-scale mapping or rough survey), the visual estimation method can be used to fix the point, that is to say, according to The terrain around the measuring point, the relationship between the distance and orientation of the ground objects, and the position of the measuring point on the topographic map are judged by eyes.
When estimating the fixed point by visual inspection, first use the compass to orient the topographic map at the observation point, that is, place the long side of the compass against the east or west frame of the topographic map, and move the topographic map and compass as a whole so that the north pointer points to At o degree of the accurate dial, the north direction above the frame is consistent with the north direction of the observation point. That is to say, the southeast and northwest directions of the topographic map are consistent with the southeast and northwest directions of the field. At this time, the extension direction of some linear features such as rivers and roads should be parallel to the river or road marked on the topographic map.
After orienting on the topographic map, pay attention to finding and observing the characteristic terrain features around the observation point that are easy to find on the map, and estimate their relative position (such as direction, distance, etc.) to the observation point. relationship, and then find the location of the observation point on the topographic map based on this relationship, and mark it on the map.
(2) In geological work with a slightly larger scale and higher accuracy requirements, the intersection method needs to be used to determine the point.
First, orient the topographic map (the method is the same as the visual estimation method)
Then find three points near the observation point that are not in a straight line and have been shown on the topographic map. Know the points such as triangular points, mountaintops, buildings, etc. Use a compass to measure the direction of the observation point. At this time, the object plate of the compass is facing the observer (because the position determined by the observer is unknown). Put up the small hole of the anvil plate and trace the selected triangular point or mountain top through the small hole and the center line of the reflector. When the three points are connected in a straight line and the bubble is in the center, the reading pointed by the north needle is the direction of the survey line, that is, in which direction the observation point is located at the known point, record the directions of the three survey lines.
Find the known points on the map, use a protractor to draw, and...gt; There are many, which are used to determine the location of Yin points, and can also be used to stabilize the house, attract wealth, eliminate evil spirits, etc.;