1. The difference between the compass and the compass

The compass is also known as Sinan. The main component is a magnetic needle installed on the axis. Under the action of a natural magnetic field, the magnetic needle can be rotated freely and kept on the cut line of the magnetic meridian.Performance can distinguish the direction.Commonly used in navigation, land measurement, travel and military.The invention of the compass in the direction of physical indications consists of three components, which are Sinan, compass, and magnetic needles, all of which belong to the invention of China.

Feng Shui compass, also known as compass, Luo Jing, Luogeng, Luo Jingpan, etc., consisting of Tianchi (compass), Tianxin ten and inner plates. The entire disc can rotate back and forth.Tool.In addition, it also has the effect of blocking evil luck. For families with poor home transportation, they can be placed in the direction of north and south and placed in the financial position of the home or the middle of the living room., Improve Jiayun.

Ancient Chinese compass is divided into coastal and mainland types. The coastal production site is Zhangzhou and Xingning, Fujian, and is used for navigation.The main producing area of the Mainland is Wanan's Feng Shui compass, which is used to determine the orientation and layout of house buildings and tombs.

The ancestors of the compass and the compass are the same. They are all called Sinan. Sinan also has a lot of information. Later, according to the different effects, the guide needle focuses on the direction, and the compass was used by Mr. Feng Shui.The detailed angle is also a kind of compass.

There are more functions of the compass than the compass. The compass can only be used to judge the direction. The compass also has measured inclination and tendency. The compass is developed on the basis of the compass!

Second, Sinan and the compass, who invent first

Sinan was the earliest recorded in the late Warring States Period. The compass was the Southern song Dynasty, so Sinan was earlier.

Is the risk coefficient of parachuting high?

Relatively speaking, parachute is far from everyone's imagination.Especially the two -person parachuting that ordinary people can experience, the safety factor is relatively high.From the data alone, the rate of parachuting death was about one hundred thousand.And most of the accidents occur in single -person skydiving players holding photos.A double skydiving experience and safety coefficient depends on the professional level and equipment of the parachute base where you go.

From the perspective of big data around the world, parachute is a relatively high safety exercise. The safety factor is about the same as you go to the amusement park to play roller coasters!If it is not safe, it will not gradually evolve commercialization if it is not safe.The parachute contains a three -layer emergency protection mechanism. The first layer is the main umbrella, the second layer is a spare umbrella, and the third layer is an automatic umbrella.

Will there be a sense of weight jump?

In fact, during the entire skydiving process, there are two places a sense of centrifugation (weight loss) will be particularly strong:

1The process of rising planes

Most of the time when the plane rises (the aircraft rises (the aircraft rises (the aircraft is rising (the aircraft is rising (most of the time is stable (10-15Around minutes), it will always keep a certain amplitude flying up, but occasionally adjusts the angle according to height and wind direction.For example, the amplitude of the tilted upward becomes larger, turning left or right, etc. When the moment the change is changed, it will feel a centrifugal force.

The feeling of centrifugation is very short, just as the bus brakes is as short as possible, and the one comes quickly. You just feel the centrifugal power. The fear of the fear has not had time to surge.Leave3Second, the stimulant before jumping is beautiful.

2, Before jumping out of the cabin5Second:

This is better to understand that people change from a relatively static state to a state of a fast fall (200kilometer/ /Hour, that is, per second50Mi), "Acceleration" is still very strong, especially with psychological changes. The feeling of centrifugation is more strong.Your heart will be close to your back, you will involuntarily hold your breath, because you will feel better.

wait5After the second, you will completely get away from that feeling (relatively uniform speed), but at that time you will be a little nostalgic. The bloodline is sprayed. Don't be too cool!

5000How long does it take for the rice parachute to land?

5000Mi is the most common height of military skydiving and special forces. It is also the height that some very popular and extreme athletes like to try.From this high skydiving, the landing time is usually in6About minutes.However, the specific time still depends on factors such as airflow, weight, wind speed, and parachute area.During the parachuting process, the skydiver needs to adjust the landing speed and direction in a timely manner according to his own experience and weather conditions to land smoothly.

1. The practice and size of the Sleeve

The price of the Sleeve cover on the market is not expensive, but some friends want to make a Sleeve sleeve at home.Making home cuffs at home is generally restructured in old clothes, or cutting with excess cloth. The size of the Sleeve is mainly based on the thickness of your arm. Generally, the width of the fabric is less than 6 inches.Width, 1.3 feet long, enough to make a Sleeve.The practice of the Sleeve is:

1. Select ingredients: Choose the fabric or old clothes that are not needed at home, and put it on the table to cut.

2. Cutting: Fold the cloth into four layers, facing the opposite side, measure the opening from the opposite place to the opening, the upper cuffs are 0.63 feet, and the lower cuffs are 0.53 feet.The connection is connected, the shape of the ladder, and the excess part of the line is cut off.

3. Switching: The opening should be sutured. Generally, the rubber band is stitched with a rubber band. The loose Belt is sew first into small circles. The upper cuffs are larger and the lower cuffs are smaller.You can just relax.

4. Complete: After the suture is sutured, put on the arm to try it. If you have any problems, it can be used without any problems.

2. How to make DIY homemade sunscreen cuffs

The above introduces the cuffs of housework. Below teach you how to make sunscreen sleeves, you can make socks. The ice silk material is better. The specific method is:

1. Choose socks with good socks and cut the mouth of the socks; then choose a slightly thicker pantyhose, it is best to cut it.

2. The sock mouth and the cut pants legs are placed on a suitable foam or bottle. This is convenient for the sewing, because it is not convenient to set it in the hand.

3. After sewing the socks and pants legs, wear it on your hand to act as a sunscreen Sleeve. Put sunscreen on the arm, or you can wear it on the leg to keep warm, which is very practical.

What are the Outdoor emergency medicines

It is inevitable to have a small injury and small pain, especially in extramarital sports, especially in extramarital sports, but which are necessary?

1. Common Outdoor emergency drugs

Corporation, anti -inflammatory drugs, Yunnan Baiyao (powder agent and qi mist), Ji De Sheng snake pills, human Dan (prevention of heat stroke), halo Haining (motion sickness and motion sickness), hot poisoning tablets, Baiyi Ning (antipyretic), Daxi medicine (stomach medicine), Iodine, Red Jingtian (need for plateau regions), fast -acting savior pills, and stirshin (anti -allergic) and other medicines. If you have chronic diseases such as heart disease, hypertension, asthma, etc., do not forget to bring life medicine.

2. Topical medical equipment

Bleeding band, elastic bandage, gauze, disinfection paper, medical alcohol, band -aid and so on.

Tips:Anti -inflammatory drugs can deal with tonsillitis, bronchitis, pulpitis, and folliculitis, and swelling.

Tourist emergency medicine method (please refer to the instruction manual strictly for specific use!)

Ji De Sheng snake pills: 20 tablets for the first time, 10 tablets every 6 hours, 10-20 tablets in severe cases

Ren Dan: heat stroke, dehydration, usually eat 10 capsules at a time, twice a day.

Yunnan Baiyao: Sword injury, gunshot bleeding 0.25g of warm water at a time, use wine to be mixed with wine, apply it in the wound. When dangerous, take the insurance pill.

Halo Haining: Motion sickness, 50 mg of seasickness

Hot poisoning tablets: 3-4 tablets per oral, 3 times a day, decreasing children, clearing heat and detoxifying

Nopardia: Orally 2 diarrhea at a time

Amo: 1-2 capsules at a time, visual symptoms, antibiotics

Baiyi Ning: 1 tablet every time, fever medicine

Da Xi: 1-2 slices of stomach medicine 3-4 times

Yunnan White Ointment: Broken damage, one table

Esmin: Each time, anti -allergic medicine

Yunnan White medicine Spray: If the situation is serious in 3-4 times, please use the conclusion before spraying.

Quick -effective savior pills: one capsule every time

Cold medicine: fast -acting wound capsules, ginger and Hongtang, board Lantan tablet 2 board, Shi Kang 1 board, Kangtaik, please see instructions for specific use

Huoxiang Zhengqi Water: Treatment of heat stroke, fever, diarrhea, bloating and stomach pain, gastrointestinal and fever cold, etc., one at a time, up to 2

Fenbid: Anti -pain, but it is not recommended to eat it, which will cover the symptoms and delay the treatment

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Skydiving for physical requirements and conditions

1 ,weight: The premise is less than 200 catty.Overweight, exceed 250 In pounds, you need to call the skydiving school and base in advance to confirm whether there are coaches and equipment.Too light, 50 About kilograms or even smaller, you also need to confirm in advance whether there are skydiving coaches that are not much different from your weight.

2 , Physical condition: Iopathy can be skydamed, but those who have surgery of myopia must ask their doctors and follow the doctor's order.Don't go.Other physical conditions such as otitis media and waist discs are protruding or something. If you do nt know, you must ask the doctor and follow the doctor's advice!Patients with hypertension and heart disease try to avoid skydiving activities.women's physiological period and pregnancy cannot be skyrocketing.

3 ,psychology: As an extreme exercise, parachute is not a joke, but there is risk of death!Once you jump, you can't stop, so you think clearly before the parachuting, do you really want to go, don't stand it, leave the psychological shadow!

4 ,age: 10 70 age.This is not too small, not too old, you can maintain your body coordination and the speed of reaction. OK Essencecertainly, 18 The consent of the guardian under the age of age.

5 Others: do not exceed the height 2 Mi, not lower than 1.1 Mi; don't eat or eat less before parachuting.

Parachute taboo crowd

1 There are fear of heights: patients with fear of heights must not be able to parachute, which will cause great trauma to patients, and may leave shadows.

2 , A heart disease: People with heart disease will beat severe heart at high altitude. If people with heart disease have skyrocketing, they may cause heart disease.

3 2. Hypertension: People with hypertension cannot go to parachute. During the parachuting, people's blood pressure will increase sharply. People with high blood pressure are likely to faint and accidents.

4 There is dizziness: people with dizziness are not recommended to parachute, because you are likely to faint in the air.

5 There are hypoglycemia: People with hypoglycemia cannot also parachute. If you suffer from hypoglycemia, you may experience symptoms such as insufficient brain blood supply, cold sweat, and trembling at high altitude.

6 Excessive labor: If fatigue and poor constitution in the near future, do not parachute. If you want to go, you must carefully obey the coach's arrangement and guidance.

7 Excessive obesity: If you are too obese and are too large, you may also be persuaded by the coach when the parachuting base.

Skydiving the requirements for myopia for eyes

The height of myopia should not be sky -high, because skydiving it is a extreme movement, because patients with myopia may occur if some dangerous or risks may occur if they are engaged in parachuting activities.If it is myopia lower than 600 Patients with degree generally do not have great impacts.