Live Wilderness Adventure

Chapter 464: It must be because of Lorenz!

This, how do you see this?

Leonardo just watched Bi Fang take out the second hand from the watch, put it on the hair and rub it a few times, put the leaves on it and put it into the water, then pointed to the still direction and said it was north and south.

What north and south?

what?

【I know, this is Lorenz's theorem! 】

[Those who said Lorenz's theorem, I slowly put a question mark]

[Is it magnetization? Have you never been to school? It should be the same as the compass, but it is only temporary]

"The principle is actually very simple. It is the forming principle of the compass, but one is permanent and the other is temporary." Bi Fang picked up the leaves in the puddle, drained the water, reinstalled the pointer on it, and buckled it. Tight dial.

"Repeatedly rub a piece of wire or a sewing needle against silk or hair in the same direction. I don't know if you have ever played with rubbing a plastic ruler on your hair and sucking up scraps of paper when you were in school. game?

In fact, it is a truth, the iron wire will generate magnetism, and it can indicate the North Pole when hung up.

It is similar to putting a bar magnet in the center of the earth, the magnetic north pole is near the geographic south pole, and the magnetic south pole is near the geographic north pole. The magnetic pole and the geographical pole do not completely coincide, and there is a magnetic declination, but it is enough to distinguish the direction.

The magnetism in this way will not be very strong. After a period of time, you need to rub it again to increase its magnetism.

If you have a battery with a voltage of 2 volts or more, you can magnetize the metal by using an electric current. You also need to prepare a small piece of metal wire, which is preferably covered with insulation. "

[I know the one that sucks confetti, I often play, dog head.jpg]

[No way, no way, no one has never played with plastic paper to absorb scraps of paper, right? 】

[But what if there is no watch? Can't everyone carry wires? 】

Leonardo also raised such doubts, indeed, what if there is no watch? Or what about electronic watches?

This approach still has limitations.

He wanted to know a more general and universal method from Bi Fang.

"Without a watch second hand, you can also use a thin, flat razor blade to indicate direction, because it is made of two types of metal bonded together. Carefully rub the blade on the palm of your hand to make it magnetic, and then hang it. Hanging it up can achieve the same effect.”

"If you don't have these, and you are really lost, and the phone still can't get through, then you can disassemble the phone, and there must be one inside. I think everyone should carry a mobile phone? Or a flashlight, all electronic devices It will be all right."

Leonardo still wanted to ask, but Bi Fang stopped him directly: "Forget it, what kind of situation can a person be reduced to without any equipment on his body, can't see plants, can't see the sun, and can't even see the terrain?" not?"

The audience smiled knowingly.

"And sewing needles or paper clips are necessary for outdoor adventures, don't you have any?"

Leonardo scratched his head: "I brought a kettle, a flashlight, a knife, water purification tablets, and a medical kit. Is that all there is?"

Bi Fang didn't bother to say anything. After all, the other party was just an amateur. He might have prepared these things based on his feeling, and he had a good sense of outdoors even if he had water purification tablets.

"Of the basic wilderness survival tools, knives are the most commonly used tools in critical situations."

"In addition to this, you will need a knife, waterproof matches, candles, fishing line, hooks of various sizes, two small baits, wire for traps, water purification tablets, whistles, ropes, paper clips or Needle, medical tape, adhesive plaster (Band-Aid), dental floss (strong silk thread), compass, tweezers, paracetamol (pain reliever), antiseptic alcohol."

“Put all these things in a small container. This container can also be used as a small kettle to boil water in an emergency. Seal it and keep it dry. Make sure to put the wilderness kit in your in a backpack or a pocket of a suit."

[Write it down, place an order now, and keep it in your bag in the future]

[You don't think it can be used, do you? 】

【In case I get lost in the forest in the future, dog head.jpg】

[Others explore, fully equipped, ×, Fang Shen explores, a pair of pants, √]

This was the first time that Bi Fang explained in detail what he needed to prepare for the adventure in front of everyone, and he immediately wrote it down.

"Basically, I have mentioned all the methods to identify the direction, except for a few, which have little applicability, such as ant nests always run north-south, others are completely sufficient." Bi Fang did not comment on this issue. Too much entanglement, move on.

While walking, he said: "It is not enough to have a general direction. Many times, you may have lost your way when you turn around, because the surrounding environment is too similar. A certain geographical feature of the map is a marker."

"That is to say, you have to find a certain geographical feature on the ground, such as a tree, make this reference object consistent with your direction of progress, and walk towards it, and then repeat this process until you know the destination .”

"Do all the ant nests run north-south?" Leonardo quickly followed, asking in disbelief.

"Yes, this is the structural wisdom of organisms. The nests of ants and termites are all 'mounds' or 'thin blade-shaped' structures, and they must run north-south, with the hole facing south, so that they can be illuminated by the sun in winter In summer, you can avoid direct sunlight again.”

Leonardo looked shocked: "You know too much!"

"I don't know anything, how can I come out to mess around? When you know the function and name of each plant, the habits and weaknesses of each animal, the making and use of each tool, the cause and trend of each terrain, You won't be afraid of the wilderness."

"Then have you reached such a state now?"

"Me? I'm not even close."

Bi Fang crossed the dense forest and stood on a rock, and the sound of gurgling water suddenly became louder.

A stream no more than two or three meters wide appeared in front of everyone.

Leonardo was overjoyed, his pale face returned to blood, and he really found it!

He couldn't wait to come to the side of the stream and held up a pool of clear water. The stream here converged from nowhere, and after being filtered by rocks and sand, it was clear and transparent without any impurities.

However, with the lessons learned from the past, Leonardo didn't dare to put it in his mouth to drink. He took out the kettle to fill it with water, and put two water purification tablets in it.

[Although I've said it many times, I still want to shout out, Fang Shen is amazing! 】

[Sure! 】

Every step is very safe, if you talk about finding a water source, you will definitely find a water source.

If you can find the direction, you will be able to find the direction.

How can such a person not give people confidence?