Chapter 163 Unreliable Weather Forecast
The stick stood in the dirt, casting a shadow straight down to the ground.
Bifang marked the position of the shadow in the mud, his movements slow and careful, like an old watchmaker repairing a clock in an alley, using tweezers to hold the parts and assembling them bit by bit.
If it weren’t for what he said before, some people might really think that Bifang was repairing watches.
[Measure the longitude and latitude, no way, no way, no one really expects a wooden stick to measure the longitude and latitude? ]
[A wooden stick is used to measure longitude and latitude? Is Fang Shen joking? ]
[I was lying at home and I quickly checked the GPS. I was terrified. Fortunately, it wasn’t me who lost contact ()]
[Can longitude and latitude be measured directly? If they can be measured, I, Fang Shijie, will stand upside down and have diarrhea on the spot, and then eat it! ]
[Instead of cheating for food and drinks, why not show everyone how to pick a lock with a toothpick? ]
Not only new audiences don't believe it, but even many old fans are skeptical.
"This is too fake, right? How can the longitude and latitude be measured with just a wooden stick? Even today's anchors who lie to people should at least follow some basic principles, right?" A man hanging from a ring on the subway couldn't help but speak out.
The subway was crowded and the man stood there for a long time. He accidentally found two girls in front of him watching a live broadcast. He glanced at them curiously and saw this scene.
On the phone, a man who was a little bit more handsome than he was when he was younger was bragging a lot. Then he stuck a wooden stick into the ground, made two marks on it, and said he wanted to use it to measure the longitude and latitude.
There is no method to cheating people, how to solve it?
Only a young girl who has not been in society would believe it. She is pretty, so how can she be brainless?
Yang Ziyan looked back and found that it was a bald, slightly fat office worker who was slandering her idol. How could she tolerate this?
"How is it impossible? Just because you can't do it doesn't mean Fang Shen can't do it either. He is the world's number one survival master!"
The man was dismissive of this statement: "Fang Shen? Survival master? And the world's number one? It's ridiculous. Not to mention that the title is so tacky, who is the world's number one? Is there a competition?"
He pointed at Yang Ziyan and her classmates and said, "It's because of you little girls. You don't know how to study hard. You just chase stars and internet celebrities all day long. You praise these good-for-nothing people to the highest level. You might as well read a few more books to enrich yourself."
Yang Ziyan wanted to refute, but the classmate next to her had already spoken first: "Uncle, do you never watch the news? Are you so self-righteous? My grandfather would go online to watch the news, there won't be anyone who doesn't even watch the news, right? No way, no way?"
Uncle?
I'm not even thirty !
The man swallowed a mouthful of blood.
"Oh, I see. It must be because the uncle is under too much pressure from working overtime, his boss is very fierce, he has no hope of getting a promotion, his wife is having an affair with someone else, and his daughter is in a premature relationship, so he has no time to surf the Internet! Oh, that's so pitiful. Yanyan, let's go. Don't be with him. Bad vibes are contagious!"
The classmate spoke as fast as a bullet, and then pulled Yang Ziyan through the crowd and went somewhere else without looking back, leaving the stunned office workers behind.
Yang Ziyan silently gave a thumbs up, but her classmates were still not satisfied.
"I'm so pissed off. While Master Fang was fighting a pack of wolves, this guy must have been constipated in some corner."
"Okay, okay, since he is so miserable, we should also be considerate." Yang Ziyan covered her mouth and laughed.
Wo day.
My uncle can tolerate this, but my aunt can’t!
The man not far away vaguely heard what they were talking about. He was furious because his pain point was touched. How could he swallow this? He just saw the name of the live broadcast room!
The man took out his mobile phone and downloaded a Langya APP. The first thing he saw when he opened it was Bifang’s live broadcast.
Wow, it’s still recommended on the homepage!
No one can see through this deceptive trick?
No, today he is really going to compete with me. He won’t get off this subway until he exposes the other person!
"It's not difficult to calculate longitude and latitude. It's just three factors: the sun's shadow, the direction and the date. Don't be surprised, I'm not relying on a stick, I'm relying on the sun."
Bifang pointed at the sun hanging high in the sky. The weather was very good today. The sun rose above the clouds, and the sunlight spread down along the clouds, casting shadows of the trees on the earth.
"From a phenomenological perspective, 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, including the moon and 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 that this axis points to is the north/south celestial pole. We determine our position on the plane of the earth by positioning these celestial bodies."
After Bifang explained the principle, he continued to mark along the shadow.
"First, we put a pole on the horizontal ground. Remember, we must try to make it as horizontal as possible so that the measured data is accurate. Then we keep drawing its shadow. When the shadow is the shortest, record the direction of the shadow at this time. This is the direction of true north."
"Measure the length of the shadow and the pole at this time, use trigonometric functions to calculate the sun's elevation angle, and then consider the number of days from the spring and autumn equinoxes and the summer and winter solstices. The day I set out was the 21st, so today is the 22nd. Then use trigonometric interpolation to calculate the latitude of the point where the sun is directly above the ground on that day. After adding them together, you can get the local latitude value."
"In addition, after obtaining the true north direction, record the time when the sun passes the true south direction. Because the capital time uses the time of 120 degrees east longitude, the longitude can be obtained by using the difference between the recorded time and 12 o'clock."
"However, this method is computationally complex and may not be suitable for everyone. There is a saying that goes, if you don't know how to solve a math problem, you can only write a solution."
[Fuck, what the hell is this? Why can't I understand it? Phenomenology? What is phenomenology? ]
[Phenomenology is a method of explaining physical phenomena in physics by generalizing physical laws obtained from experimental facts instead of using their internal causes. A science and engineering man passing by...]
[If you don’t know how to answer the big political questions, you can just write whatever you want. If you don’t know how to answer the English composition, you can just copy the reading comprehension questions. If you don’t know how to answer the big math questions, you can just write down the solutions.]
【Algebraist】
[I didn't expect that I would have to do math problems even though I'm stranded in the wilderness? ]
Many viewers were a little overwhelmed after listening to that series of explanations.
Bifang observed the shadow of the sun carefully. Fortunately, the shadow was still getting shorter. It seemed that it was approaching noon and had not missed the shortest point. If it had been missed, Bifang would have had to wait until night to measure the longitude and latitude with the help of the North Star.
More than ten minutes later, as Bifang and the audience chatted, the shadow finally reached its shortest point and then began to lengthen.
Bifang quickly marked the shortest point.
"When measuring the shadow length and the height of the stick, the data does not need to be precise, as long as the reference object does not change. You can choose some small tree sticks to measure, because what we require is the proportion."
Then Bifang started to write formulas using branches on the soil nearby. At this time, several sheets of white paper, pencils and a short ruler were suddenly handed to him.
Bifang subconsciously took the paper, pen and ruler, and was stunned when he saw Etienne in front of him: "Where did you get this?"
Etienne scratched his head. “I brought my homework with me and left it on the plane. I still have a few sheets of scratch paper left.”
[Oh my goodness, there is such a thing as homework? ]
[Awesome! He even brought his homework with him when he ran away. He is obviously a good student.]
Bifang was confused by this operation, but it was much more convenient with paper and pen. He sat on a stone and wrote down a series of formulas in pencil that the netizens didn't understand but seemed impressive.
[It’s over. If I don’t know math, will I still be unable to survive? ]
[This formula gives me a headache. Lao Fang is actually calculating the function by hand! ]
[I didn’t take the class so seriously, I feel so sorry for my math teacher. ]
"It doesn't matter if you don't know how to do it. In real wilderness survival, you rarely need to use this method to confirm longitude and latitude. It's just that this mission is special. It will snow the day after tomorrow, so the time and accuracy requirements are relatively high."
"Normally, you can wait until night time and use the North Star to measure. In the wilderness, the stars are very bright and the method is simple. I'll teach you when I have a chance at night."
Bifang was busy calculating, biting the tip of his pen from time to time. Many functions could not be calculated accurately without a calculator, so he could only find approximate values to substitute. The whole process made the audience dizzy.
Just as Bifang calculated the answer, the paper went dark.
Strange, why did it get darker?
Étienne looked up.
Lead-colored clouds pushed in from the southeast, and the thick clouds gave people an ominous feeling.
Etienne suddenly remembered what Erwan had said, that there would be a snowstorm the day after tomorrow.
But now.
Blizzard is early!
