Live Wilderness Adventure

Chapter 166 Unreliable Weather Forecast

The sticks stood in the dirt, and the shadows fell straight to the ground.

Bi Fang marked the location of the shadow in the soil, moving slowly and carefully, just like a master clock repairer in an alley, holding parts with tweezers and assembling them bit by bit.

If it weren't for what he said before, maybe some people really thought that Bi Fang was doing some watch repairing.

[Measuring the latitude and longitude, no, no, no one really expects the stick to measure the latitude and longitude? 】

[A wooden stick to measure latitude and longitude? Could Fang Shen be joking? 】

[While lying at home, I quickly clicked on the GPS to take a look. I was scared to death. Fortunately, I was not the one who lost contact ()]

[Can the latitude and longitude be measured directly? If it can be detected, Fang Shijie will stand upside down and have diarrhea on the spot, and then eat it! 】

[Don't lie about eating and drinking, how about showing everyone a toothpick picking a lock? 】

Not only new audiences don't believe it, but even many old fans are skeptical.

"Isn't it too fake? How can you measure the latitude and longitude with a wooden stick? Now the anchors are deceiving people and they have to teach some basic laws, right?" A man on the subway couldn't help but make a sound while hanging on a ring.

The subway was crowded with people, and the man stood here for a long time. He happened to find the two little girls in front of him watching the live broadcast, so he glanced curiously, and finally saw this scene.

On the phone, a man who was slightly more handsome than he was when he was younger was bragging, and then stuck a wooden stick in the ground, drew two marks casually, and said that he would use this to measure the latitude and longitude.

There is no way to deceive people, how to break it?

Only a little girl who has not been out of society will believe it. She looks pretty, so why is she so brainless?

Yang Ziyan looked back and found that it was a bald and slightly fat office worker who was slandering idols, could she bear it?

"How is it impossible? If you can't do it, it doesn't mean that Fang Shen can't do it either. He is the world's number one survival master!"

The man dismissed this statement: "Fang Shen? Master of Survival? No. 1 in the world? You laughed so hard, not to mention that the title is so worthless, who won the No. 1 title in the world? Is there a competition?"

He pointed to Yang Ziyan and her classmates: "It's not that you little girls don't know how to go to school well, you know how to chase stars and Internet celebrities all day long, and praise these worthless people over the top. Why don't you read two more books to enrich yourself."

Yang Ziyan still wanted to refute, but the classmate beside her had already taken the lead: "Uncle, do you never read the news? Are you so self-righteous? My grandpa can read the news online, there is no one who can't even read the news, right? No, no Will it?"

uncle?

I'm only in my thirties!

A mouthful of old blood filled the man's throat.

"Oh, I see, it must be that the uncle is under too much pressure from overtime, the boss is very fierce, there is no hope of promotion, the wife is messing with others and the daughter is in a puppy relationship, so there is no time to surf the Internet! Hey, it's so miserable, Yanyan, let's go, don't With him, bad breath will be contagious!"

The classmate spoke as fast as a bullet popped out of his chest. After speaking, he dragged Yang Ziyan through the crowd and went elsewhere without looking back, leaving only the stunned office workers.

Yang Ziyan gave a thumbs up silently, but the students were still puzzled.

"It really pissed me off. When Fang Shen was fighting a pack of wolves, this guy didn't know where he was constipated."

"Okay, okay, since he is so miserable, we have to be considerate." Yang Ziyan covered her mouth and laughed.

War day.

This uncle can bear it, but my aunt can't bear it either!

The man not far away vaguely heard what they were talking about, and he was so angry that he was poked in the sore spot, how could he not swallow this breath, just now he saw the name of the live broadcast room!

The man took out his mobile phone and downloaded a Langya app, and saw Bi Fang's live broadcast at the first glance.

Huo, it is still recommended on the home page!

No one can see this deceptive routine?

No, today he is really trying his best, and he won't get off this subway if he can't see through the other party!

"Calculating latitude and longitude is actually not difficult. There are three factors: the sun's shadow, direction and date. Don't think it's unbelievable. What I rely on here is not a wooden stick, but the sun."

Bi Fang pointed to the sun hanging high in the sky. Today's weather is fine, the sun rises above the clouds, and the sun falls flat against the clouds, casting shadows of trees on the ground.

"From a phenomenological point of view, we can regard the ground as a plane and the sky as a sphere, called the "celestial sphere". The sun follows a circular trajectory on the celestial sphere, rising in the east and setting in the west. "

"Not just the sun, but all celestial bodies, whether the moon or the stars, are all on this celestial sphere, rising in the east and setting in the west, as if they are rotating around an axis. This axis is the earth's rotation axis."

"The position on the celestial sphere pointed by this axis is the south/north celestial pole. We confirm our own position on the plane of the earth by relying on these celestial bodies for positioning."

After Bi Fang explained the principle, he continued to mark the shadow just now.

"First, let's set up a pole on a level ground. Remember, we must try to make it as horizontal as possible, so that the measured data will be accurate, and then we will keep drawing its shadow. When the shadow is the shortest, record the direction of the shadow at this time. , which is due north."

"Measure the length of the shadow and the pole at this time, use trigonometric functions to calculate the elevation angle of the sun, and then consider the number of dates from the equinoxes and summer and winter solstice on the measurement day. The day I set off is the 21st, so today is the 22nd, and then use Triangular interpolation calculates the latitude of the direct sun point of the day, and after adding it, the local latitude value can be obtained.”

"In addition, after getting the true north direction, record the time when the sun passes the true south direction, because the capital time uses the time at 120 degrees east longitude, and the longitude can be obtained by using the time difference between the recorded time and 12 o'clock."

"However, this method is complex and may not be suitable for everyone. Isn't there a saying that you can't do math problems, so you can only write a solution."

[I'm stupid, why can't I understand this thing? Phenomenal? What is phenomenology? 】

[Phenomenology is when explaining physical phenomena in physics, instead of using the internal causes, it uses the physical laws obtained by summarizing the experimental facts. The man of science and engineering passed by]

[You can’t do political problems, you can write scribbles, you can’t write English essays, you can copy reading comprehension, you can’t do math problems, you can only write a fucking solution. 】

【Algebraist】

[I didn't expect, I'm already living in the wilderness, and I still have to do math problems? 】

After listening to the series of explanations, many viewers suddenly collapsed.

Bi Fang carefully observed the shadow of the sun. Fortunately, the shadow was still shortening. It seemed that the time was only approaching noon, and he did not miss the shortest point.

Ten minutes later, during the chat between Bi Fang and the audience, the shadow finally reached the shortest point, and then began to lengthen.

Bi Fang hurriedly marked the shortest point just now.

"Measuring the length of the shadow and the height of the stick, the data does not need to be accurate, as long as the reference object remains unchanged, you can choose some small sticks to measure, because what we require is proportion."

Then Bi Fang began to formulate formulas with branches on the side of the soil, when a few sheets of white paper, pencils and a short ruler were suddenly handed to him.

Bi Fang subconsciously took the pen and paper ruler, and was taken aback when he saw Etienne in front of him: "Where did you get this?"

Etienne scratched his head: "I brought my homework here, and I put it on the plane at that time, and now there are still a few draft papers left."

[Good guy, there is still homework? 】

[Niu Pi, you don’t forget to bring your homework when you run away, you are a good student at first sight]

Bi Fang was confused by this trick, but it was much more convenient to have a pen and paper. He sat on the rock and wrote down a series of formulas that the water friends didn't understand.

[It's over, if you don't know mathematics, will you still be unable to survive? 】

[This formula makes my head spin, Lao Fang actually calculates the function by hand! 】

[I'm not so serious in class, I'm really sorry for my math teacher. 】

"It doesn't matter if you don't know it. It is rare to use this method to confirm the latitude and longitude in real wilderness survival. It's just that this mission is special, and it will snow the day after tomorrow, so the requirements for time and accuracy are relatively high."

"Normally, you can use the Polaris to measure at night. The stars are very bright in the wilderness, and the method is simple. I will teach you when I have a chance at night."

Bi Fang buried his head in calculations, biting the tip of his pen from time to time. Many functions were inaccurate without a calculator, so he had to find approximate values ​​and substitute them in. The process made the audience dizzy.

Just as Bi Fang calculated the answer, the paper went dark.

Strange how it got dark.

Étienne looked up.

The lead-colored clouds pushed over from the southeast, and the thick clouds gave people a sense of foreboding.

Etienne suddenly remembered what Erwan said, there would be a blizzard the day after tomorrow.

but now,

Blizzard is ahead of schedule!

Cold knowledge: The probability of being found not guilty after criminal detention in China is 4 out of 10,000.