Video spoilers history, starting with the blitzkrieg on Poland

Chapter 450 Popular Science Hypothermia was of great use to the ancients, the flying fish!
And follow Sima Zhong's words.

New related canopies also appear.

This is a shorter science video that is simple to understand but useful.

Modern netizens all watch it very seriously.

【Learn about hypothermia in 1 minute. 】

[Recently, hypothermia has once again become a hot topic among netizens.]

【Today let's talk about what is hypothermia? 】

[See what are the symptoms of hypothermia and how to treat it? 】

[In layman's terms, hypothermia means that the body's heat loss is greater than its heat supply, causing the body temperature to drop excessively. ]

[When a person's body temperature drops below 35 degrees, hypothermia will occur, causing the body to experience chills, heart and lung failure and other dangerous symptoms. ]

[It can be said that hypothermia is very dangerous and is a symptom that can easily lead to death. ]

So, what causes hypothermia? 】

【Causing hypothermia? 】

What causes hypothermia?

【The three most important factors. 】

【Especially the outside temperature, humidity and wind speed. 】

[If any two of the above three factors occur at the same time, it is possible that the human body will suffer from hypothermia. ]

[Even if the outside temperature is not low. ]

[However, as long as the human body surface is moist and there is wind that continuously takes away the heat, hypothermia symptoms may occur. ]

[Mild hypothermia is the initial stage of a patient's exposure to cold.]

[At this time, the patient's body temperature is below 35 degrees, and he or she is prone to cold-induced polyuria, severe chills, and decreased judgment. ]

[At this time, hypothermia patients are often unable to perform complex and delicate movements, but they can still think, speak, and walk. ]

【At this time, transfer is required as soon as possible. 】

[Moderate hypothermia means that the patient's body temperature continues to drop below 32 degrees. ]

[At this time, the patient's hand and foot muscles are not coordinated, the movements are very slow, clumsy and very strenuous, and it is easy to fall when walking. ]

[Both your heart rate and your breathing rate will slow down.]

[The pulse will become very weak and may even cause arrhythmia! ]

[In this case, it is not just a matter of confusion and impaired judgment. ]

[On a mental level, patients may even experience hallucinations, coma, drowsiness, and mental confusion.]

[You may even feel very hot and start taking off your clothes.]

[In this case, once you fall asleep, you may never wake up again]

[If not treated promptly, moderate hypothermia can develop into severe hypothermia.]

[At this time, the patient's body temperature will continue to drop below 29 degrees, or even drop to 24 degrees. ]

[The human body's condition at this time is already extremely dangerous. ]

[The heart may stop beating at any time, the body's acid-base disorder may occur, there may be no response to external stimuli such as pain, the corneal reflex may disappear, and there may be horizontal lines on the electrocardiogram.]

【At this point, the human body looks like it is already dead. 】

【But actually still alive. 】

【But it’s almost like death. 】

[When the human body is below 25 degrees, pulmonary edema, heart and respiratory failure will inevitably occur. ]

[And the body temperature may drop further. ]

[But basically, before reaching this temperature, people have already died. ]

[When encountering hypothermia, the patient needs to be transferred to a dry, sheltered place in time. ]

【Take off any wet clothing.】

【And pay special attention to keeping the patient's head warm. 】

[If the patient is severely hypothermic, do not warm up too quickly. ]

[Because if the body temperature is raised too quickly, the cold blood will flow back into the heart.]

[It is very likely to cause shock to the human body. ]

【Even death! 】

This short video provides a scientific explanation of hypothermia.

This was very practical for the ancients.

Although ancient people also knew that they should respect nature when walking in the mountains.

You must know how to keep warm.

The degree of respect and awe they showed was far greater than that of modern people.

But many ancient people really didn’t know why people would freeze to death in seasons with high temperatures!

Now, after the popularization of the sky dome video, the ancients know about it.

Even on summer nights, be alert to hypothermia.

For the ancients who often walked in the mountains and wilds,
It is even more practical than modern netizens!
This short video also plays a certain role in popularizing science for today's netizens.

《It turns out that hypothermia can also occur in summer? 》

"The normal body temperature is more than 36 degrees, and then below 35 degrees will cause hypothermia? Will humans be hypothermic? The human body is really a sophisticated instrument!"

"I went for a night run two days ago, and it was windy and the temperature dropped. I developed the initial symptoms of hypothermia on the way."

"It is not recommended to wear cotton sweatshirts and pants for outdoor activities. They will not keep you warm if they get wet with sweat."

《Avoid excessive sweating in winter to prevent hypothermia.》

"Many people in Northeast China die from hypothermia every year."

"I have a guy who was riding his bike home after drinking. He didn't come home for a long time. When I went out to look for him, I found that he had taken off all his clothes and was lying naked in the snow, dead."

"Shouldn't the body feel warm after drinking?"

"Yes, I like to drink a little wine in winter. Every time I drink, my hands and feet feel warm and comfortable."

"Drinking alcohol speeds up blood circulation, which transfers heat from the core of the body to the limbs, causing further heat loss. Drinking alcohol to warm the body will make it easier to freeze to death."

"Remember, I have to bring a thermal blanket when I go hiking in the wild next time."

《Remember, the thermal blanket for outdoor travel must be wrapped close to the body, not wrapped outside the clothes! 》

……

After the video about hypothermia,

A new canopy soon appeared.

A slow-motion documentary video appeared on the sky screen.

First of all, there is a vast ocean.

It is boundless, blue and green, and very beautiful.

Under the sea water.

You can vaguely see large schools of fish swimming.

suddenly!

There was a break in the sea,

A fish popped its head out, followed by many fish.

It is normal for fish to float to the surface.

But the next moment, an amazing scene appeared!

The entire body of the fish had completely left the water!
It starts with just leaving the water.

Later, it even flew directly to a low altitude above the water!

Start a long distance flight!
The fish was like a flying bird, waving its fins like wings in the air.

They are flying fish!
The school of flying fish in the lens,

He flew far away in one breath!

Gorgeous figure!

The documentary uses a combination of fast and slow motion to fully record a group of flying fish, from emerging from the water to gliding.

To flap their wings,

And the whole process of falling into the water again.

The shots are so beautiful that it can be called a top-notch documentary.

It is indeed a clip from a top documentary.

(End of this chapter)