Video spoilers history, starting with the blitzkrieg on Poland

A new canopy soon appeared.

A piece of space appeared on the sky.

The empty space seemed dark and silent, with only a few tiny specks of starlight.

[We all know that the universe is cold, but how cold is it? ]

[Compared to the lowest natural temperature ever recorded on Earth, minus 94.5 degrees.]

[The coldness of space is much more extreme than this temperature.]

【Through the study of cosmic microwave background radiation, scientists have discovered that the average temperature of the universe is as low as about 2.725K. 】

[Converted to the more familiar Celsius, that's minus 270.425 degrees Celsius! ]

[This temperature is infinitely close to absolute zero. ]

[In such a low temperature environment, the movement of all matter becomes extremely slow, almost stopping. ]

[The universe is like an endless super freezer. ]

【Everything is frozen in this extremely low temperature. 】

[Since the universe is so cold, and we humans want to go into space to explore it, we have to keep the astronauts in the space station at a suitable temperature.]

[If the temperature of the space station is more than 20 degrees, and the temperature of outer space is minus 270 degrees. ]

[Back and forth, the difference reached about 300 degrees, which is very exaggerated. 】

[Then it must be in order to keep the space station at a comfortable temperature of around 270 degrees in a universe with a temperature of -20 degrees. ]

[We must work hard to keep the space station warm, right? ]

Outside the sky.

The ancients all felt that the coldness of the universe was indeed terrifying.

I feel the same way.

Suppose you want humans to live in outer space.

Then human spacecraft must be heated and kept warm in large quantities, otherwise they would have been frozen into popsicles.

And the sky continues.

【In fact, the opposite is true.】

[Space stations, spacecraft, etc. do not need to think about heat preservation and heating. 】

【On the contrary, it takes a lot of effort to dissipate heat. 】

[Yes, a space station in the space at minus 270 degrees.]

【The first priority is heat dissipation. 】

[Yes, no matter how cold the universe is, the space station is afraid of heat. ]

【First is the heat from the outside. 】

[Don’t be fooled by the fact that the space station is in the cold space. ]

[However, the temperature on the side facing the sun is over 120 degrees.]

【The temperature on the back can reach more than 100 degrees below zero. 】

【The difference is huge! 】

[During a day's voyage, the space station will experience multiple sunrises and sunsets, as well as multiple days and nights.]

[This means that the space station will not only be subjected to high heat from the outside world. ]

[And it is repeated and drastic temperature changes! ]

[In addition to the external heat brought by the sun and other external factors, the heat generated by the space station itself is also quite amazing. 】

[The space station is a human outpost in space, filled with a variety of complex equipment. ]

[These devices are like little suns that never get tired. They work diligently every minute and every second that the space station is running.]

【Electronic devices are responsible for processing various data. 】

[The power system provides energy for the space station to operate. ]

[The life support system ensures the survival of astronauts. ]

[While these devices are working, various forms of energy, such as electrical energy and mechanical energy, are constantly being converted.]

[It is inevitable that a large amount of heat will be generated. ]

[Take the International Space Station for example. When its power system is in operation, the waste heat power generated is as high as tens of kilowatts! ]

[This is not a small amount! ]

[If this heat cannot be dissipated in time, the consequences will be disastrous. ]

[The key space station has densely packed equipment and complex layout.]

[The heat generated by many devices is concentrated in a limited space, and it is difficult for the heat to diffuse naturally. ] [In addition, the space station has to take into account multiple functions, which makes it difficult to leave enough space and a reasonable layout for heat dissipation in design. ]

[If the computer is running for a long time, the heat dissipation is not good. ]

【There will be lag or even crash. 】

[The same goes for the electronic components in the space station.]

[Excessive temperature will seriously affect their performance, accelerate their aging, and even directly cause them to be damaged. ]

【As for the space station. 】

【The slightest damage could be fatal.】

[Besides, astronauts also need a suitable temperature environment to live and work. ]

If the temperature in the space station continues to rise, the astronauts will feel too hot and will not be able to perform their tasks normally.

【Affects the efficiency of scientific research.】

Jin Dynasty.

Sima Zhong used his clever brain.

After independent thinking, I discovered the problem with the skylight.

"Isn't that a bit too exaggerated?"

"Maybe the space station itself is hot, but it's in a very cold space."

"Sometimes I warm myself up by the fire too hot, and when I run outside without wearing a piece of clothing, I instantly feel cold."

"It must be the same with the space station."

"In the extremely cold space, it's good enough not to freeze to death. Heat dissipation will definitely not be a problem."

"My dear ministers, you always say that the sky curtain sometimes makes mistakes."

"This time I discovered the mistake of Tianmu, hehe."

The sky continues.

【The space station urgently needs cooling.】

【But it is actually quite difficult to dissipate heat in a space station.】

【We know that the main way to dissipate heat on Earth is heat transfer. 】

[It is also the most convenient and familiar cooling method. ]

【Heat will transfer from a hotter object to a cooler object.】

[Just like if you hold a hot water bottle in your hand, the heat will be transferred from the hot water bottle to your hand, making you feel warm, and the hot water bottle will also dissipate heat. ]

[On Earth, we can rely on air or water to transfer heat to dissipate heat. ]

[But in space, this conventional method doesn’t work.]

[Because space is a near-perfect vacuum environment, there is nothing in contact with the space station, so naturally there is no way to dissipate heat.]

[Just like the thermos cup we are familiar with, the heat preservation principle of the thermos cup is actually vacuum. 】

[The thermos cup is divided into two layers of inner and outer walls. 】

【And between the inner and outer walls of the cup, try to create a vacuum. 】

[In this way, the water in the cup will not be able to transfer heat between the inner and outer metal walls of the thermos cup. ]

【Thereby achieving a heat preservation effect. 】

Outside the sky.

Zhuge Liang's eyes lit up!
Originally a sky screen video about the temperature in space and the heat dissipation of the space station.

For Zhuge Liang, it was just a place to watch the fun and gain some knowledge.

After all, going to outer space to build a space station was a difficult task for Zhuge Liang who lived in the Three Kingdoms era.

It's a problem that doesn't even need to be considered.

But Tianmu used the thermos cup as an example.

Zhuge Liang looked at the cup on the sky with great interest.

"According to Tianmu, if we try to make the space between the two pieces of iron into a vacuum state, it will have a good heat preservation effect."

"That's very strange."

“Although I don’t know how to make the material for the thermos cup yet, I still feel that this technology is worth paying attention to and applying.”

"If used well, it should be very helpful in providing hot water during our subsequent march."

"If the soldiers in the Northern Expedition could each carry something like a thermos cup, they could have hot meals and hot water every day."

Zhuge Liang also looked at the sky with greater interest. (End of this chapter)