Slowly cut open the bottle of liquid nitrogen with a knife!

The aluminum bottle was vulnerable to the sharp blade, and white smoke was coming out of the hole in the bottle's mouth, and these things were very cold, after all, it was minus 200 degrees of gas.

The liquid nitrogen is quickly poured into the bamboo tube to make the smoky liquid visible, and then a sealed bottle filled with water is placed into the bamboo tube, and then the mouth of the bamboo tube is sealed with leaves.

"Liquid nitrogen is amazing!" Han Xuening came into contact with liquid nitrogen for the first time, she was blocking the bamboo tube with leaves, and she could obviously feel that the bamboo tube was cooling down rapidly.

It only took a dozen seconds for liquid nitrogen to be injected into the bamboo tube, and some water droplets appeared on the outside of the bamboo tube, and these water droplets turned into white ice beads in the next second!

10 seconds have passed!

Everyone is looking forward to the water in the bamboo tube!

Has it all condensed into ice?

After all, this is liquid nitrogen, a liquid at minus 200 degrees!

Would you like to open it and take a look?

In case of...... Now the water inside is not condensed, and within a few seconds of opening it, the liquid nitrogen will evaporate much, much more.

However, if all the water in it is condensed, and you are still waiting like this, will something happen to the ice water due to the continuous low temperature?

For example, if the ice bottle bursts, or does it explode?

Qin Fengyi asked, "Do you want to open it to see if the water inside has turned into ice?"

"Don't have enough time, right?" Lin Qingxue thought for a while and said, "Why don't you wait? Liquid nitrogen will evaporate quickly when it encounters air." ”

"Okay...... I'm afraid that something will happen if it takes too long. Qin Fengyi sighed, liquid nitrogen is not easy to come by, and it has to be used sparingly.

"There shouldn't be any accidents!" Han Xuening, acting as a teacher, explained, "Everyone knows that the boiling point and freezing point of water, and the high temperature produced by fire when it burns is at least a few hundred degrees, or even thousands of degrees, but under normal circumstances, the temperature of water will not exceed 100 degrees, because this has reached the high temperature range of water temperature. ”

Han Xuening looked at Qin Fengyi, who was listening carefully, with a smile on her face, "The lowest temperature of water, which is the temperature of the freezing point, will not decrease with liquid nitrogen, as long as it reaches the freezing point, it will only condense into ice, and the temperature will naturally not drop much." ”

"Hmm......" Qin Fengyi pondered carefully, feeling that what Teacher Han said was very right, so he asked, "After the water boils, it is 100 degrees, what will be the lowest temperature until freezing?"

Lin Qingxue is also curious, although she is a scholar, there are also simple knowledge in this world that scholars don't understand.

"This ......," Han Xuening said bitterly, "The author Chinese the evidence at the beginning, so naturally he didn't know it, and he didn't check the information...... So ......"

"Understood...... Qin Fengyi complained, "The author is too lazy, and he is so lazy without culture, no wonder he keeps hitting the streets." ”

"Is it really good for you to complain about the author like this?" Lin Qingxue pursed her lips and squinted at the two of them.

Another dozen seconds passed......

Qin Fengyi and Han Xuening couldn't wait any longer, driven by curiosity, you really wanted to know if the water in the bamboo tube had turned into ice, and the passage of time would be greatly slowed down, obviously only a minute had passed, but it was as long as a century.

"We ...... Let's open it and take a look!" Han Xue Ning couldn't bear it, "The temperature of liquid nitrogen is minus 200 degrees, so after such a long time, it should be frozen." ”

"I agree too!"

Qin Fengyi quickly opened the bamboo tube, immediately took out the bottle, and then put in a bottle and sealed the bamboo tube, this action was only a few seconds, which can be described as very quick.

However, in just a few seconds, the liquid nitrogen evaporated a lot, and everyone who watched it was distressed.

"Damn, it's so icy!" Lin Qingxue took the bottle taken out of the liquid nitrogen, the bottom of the bottle was still bubbling cold, and these cold gases were all liquid nitrogen stuck to the bottle.

When the liquid nitrogen comes into contact with the air, it will evaporate in a short time, and in just a few seconds, the thick mist becomes extremely thin, and only a little cold air is rising.

"It's already frozen!" Han Xuening looked at the transparent plastic bottle, half of the bottle was already frozen, and the other half was still water.

"Everything soaked in liquid nitrogen has condensed into ice, and the top of the bottle is still water, and it seems that the bottle needs to be turned upside down and stuffed for a while. Qin Fengyi stared at the bottle that had just been taken out of the liquid nitrogen bamboo tube, and the ice cubes inside were floating at the upper end of the bottle.

"Okay, let's hurry up!"

Han Xuening quickly opened the sealed bamboo tube, then quickly took out the bottle inside, turned around and stuffed it in again.

Ten minutes later......

Dozens of frozen ice bottles were lying in the refrigerator, and more than a dozen bottles of water had not completely turned into ice because of the loss of liquid nitrogen from the back.

"These half-water, half-ice ...... Put it directly in the refrigerator, anyway, there are a lot of ice bottles in it, and it is estimated that it will not be long before they all freeze into ice. Lin Qingxue made ice water for a long time, and she only felt cold, especially those little hands.

"Been in the ice cellar for a long time...... It's pretty cold. Han Xue was inhaling hot air and rubbing her red little hands.

"Come, I'll help you!" Qin Fengyi grabbed Han Xuening's little hand dotingly, exhaling hot air.

"Damn!" Lin Qingxue pursed her lips in amazement, and Xiao Nizi weakly pointed to the outside of the 40-degree heat, "Let's go out and warm up for a while, as for showing affection here?"

Xiao Nizi doesn't dare to be coquettish with Qin Fengyi now, she can feel that the beastly desire of this product is unbearable, Han Xuening is now the eldest aunt, and right now, Lin Qingxue is the main output object.

After that, Qin Fengyi made a few more bamboo cages, the whole is a box, just like a nesting doll, the outside of the bamboo box is covered with several layers of banana leaves, this kind of leaves are very large and wide, and the sealing is very good.

Lin Qingxue and Han Xuening are not idle, they have been looking forward to ice cream for a long time and are making ice cream with various flavors.

There are a lot of ingredients in the shelter, which have been left over some time ago, including coconut sugar, finely sifted powder, and fried walnut grains and mulberries that are about to ripen.

"Teacher Han, are you here, do you dare to eat something cold?" Lin Qingxue was stewing coconut milk in an iron pot, trying to make it thicker, so that it tasted good, and there might be a taste of small pudding.

"It should be possible!" Han Xuening rarely showed the appearance of a little girl, holding her delicate little face, and smiled cutely, "Eat a little, it should still be okay!"

"Okay...... I can't wait to get ice cream now!" Lin Qingxue stirred the viscous coconut milk in the pot, now the viscosity is similar to yogurt, add some coconut sugar and some walnut particles, put it into the bamboo tube, and then put the bamboo tube into the cold water in the bucket, and slowly wait for it to cool down.

Han Xuening squeezed the red flesh of the watermelon with a mosquito net cloth and squeezed out the juice inside.

Brother Pingtou found an opportunity and was waiting to eat the juiced pulp.

"Scarface, you can eat the watermelon seeds when I take them out!"

I haven't written for a long time.,Haven't saved the manuscript.,The pressure of the code is a little big.,Recently, after getting off work, I learned the second subject to practice the car.,After learning, go home and eat at 8 o'clock.,And I have to tell my daughter a bedtime story.,Less time for code words.。

At most a week, it will recover 2-4 more, please don't abandon it

(End of chapter)