128, Chapter 128

two days ago

Although saltpeter can be used to make ice, Qin Fang heard Doctor Li mention it before that saltpeter is a medicine that can improve the properties of medicine, and saltpeter can also be used to make firecrackers, so Qin Fang is still more cautious about saltpeter. No matter who they are, they are always very strict about medicines. Even if the medicine is not taken into the mouth, everyone will be worried.

Therefore, after finding out that saltpeter can make ice, and after Qin Fang and Yang Haiyan told the court about this method, they naturally had to face this method with a more serious attitude.

Qin Fang said: "Although saltpeter can make ice, we don't know whether the ice made from this can be used. For example, sulfur, Doctor Li said, sulfur is poisonous even with its smell, and it will not work if it is inhaled in excess. So when facing saltpeter, we Pay attention too. I will go to the Longevity Taoist Temple in Beast Mountain to ask Doctor Li."

After hearing this, Yang Haiyan felt excited. It was great that Qin Fang could think of the problem. She had read novels before and after learning that saltpeter could make ice, she curiously checked it online.

She had read information on the Internet that saltpeter was poisonous. Even though it was slightly poisonous, if it was overdosed, it would be bad for people's health. Therefore, saltpeter can be used to make ice. But here, she was a woman who accidentally discovered that saltpeter can make ice when she was washing her hands. How did she know that saltpeter was used to make ice? Therefore, in today's experiment, she did not make ice through water, nor did she tell Qin Fang.

Yang Haiyan's original plan was to wait until the experiment of making ice with saltpeter was successful, and then vaguely remind Qin Fang to ask Dr. Li whether the ice made from saltpeter was edible. As a doctor, Dr. Li naturally knew that saltpeter was slightly poisonous, so he would tell Qin Fang that saltpeter cannot be used to make ice directly because it is toxic. After that, they will definitely think about how to make ice made from saltpeter non-toxic. While thinking about the method, they will naturally come up with the idea of ​​making ice through water.

But she didn't expect that Qin Fang thought of it himself before she mentioned it. Yang Haiyan said: "Then you go ahead. My husband is still very careful. I have never noticed this."

Qin Fang was obviously happy to be praised by her. He grinned with his teeth exposed, but soon, he pursed his lips again: "Then I'll go."

It was already time for dinner. Qin Fang didn't eat dinner and went to Beast Mountain immediately. When we arrived at Beast Mountain, it was already dark, and the Taoist temple was brightly lit. Anyone who could see the Taoist temple would know that there were people there.

As soon as Qin Fang arrived at the Taoist temple, he went to Dr. Li and said, "Doctor Li, I have something to ask you, please lend me a moment."

Doctor Li saw Qin Fang being so cautious, so he followed Qin Fang to the secret place: "I don't dare to ask for advice. I don't know what the general wants to ask? Is it related to medicine?" The only thing that the general could ask him for was this medicine.

Qin Fang said: "It is indeed medicine, related to saltpeter. Today Zhuojing asked a master to make firecrackers with sulfur and saltpeter. She wanted to set off firecrackers in the house during the New Year and festivals. However, by chance, she discovered Another use of saltpeter is that it can make ice."

Doctor Li was shocked: "What?" Because he was so surprised, his voice became louder unconsciously. Ice is not only a luxury for ordinary people, it is also a luxury among aristocratic families. The quantity of ice in many families is regulated. It is not that the aristocratic families cannot afford it, but that there is not so much ice for them to sell. .

But if saltpeter is used to make ice, the price of ice will probably plummet.

Qin Fang added: "This matter is not trivial. I plan to inform the court, so I ask Dr. Li to keep it secret." Before the court has made this public, it would be really bad if it were revealed.

Doctor Li said: "General, don't worry, the common people know what they know. The general wants to ask if it can be made from saltpeter, right or wrong?"

Qin Fang said: "That's true. You said before that saltpeter is medicine, so I don't know if it can be used to make ice."

Doctor Li asked, "Can the general tell me how saltpeter is used to make ice?"

This is not a problem, so Qin Fang told the truth: "Put the saltpeter directly into the water, wait for half a day, and the water will freeze. However, the saltpeter cannot be too little, and the water cannot be too much. There is a certain amount. Saltpeter can reduce the water content. As time goes by, the temperature of the water gets lower and lower, and it freezes. "That's probably it. Qin Fang doesn't know the specifics.

Doctor Li said without hesitation: "If that's the case, then the saltpeter itself is also in the ice. Saltpeter is poisonous. It comes into direct contact with water and then turns into ice. It can be seen that the toxicity of saltpeter is also involved, so this ice cannot be used. Yes. To make so much water into ice, you need to put a lot of saltpeter. A little bit of saltpeter will cause little poison, but if you have too much saltpeter, you will have a lot of poison. So this method of making ice will It definitely won’t work.”

Qin Fang thought for a while: "You mean, as long as the ice and saltpeter are not in direct contact and the toxicity of the saltpeter is not dissolved in the ice, then the ice can be used?"

Dr. Li thought for a while, and it seemed to be the truth: "But you won't know until you check it out."

Qin Fang said: "It's simple. Come with me back home. I have a solution."

Doctor Li: "Yes."

Then, the two returned to the general's mansion.

It was already evening. As soon as Qin Fang arrived at the house, he asked someone to bring a big basin and a bowl. Fill the big basin with water, and the bowl with water, then put the bowl into the big basin, and then put saltpeter in the big basin.

When Yang Haiyan learned about it, she couldn't help but ask: "Ms. sir, what are you doing?"

Qin Fang explained: "Doctor Li said that saltpeter is poisonous. If saltpeter is put directly into water to make ice, the ice may also contain the toxicity of saltpeter and cannot be used. So I think if the saltpeter is separated from the water, then the water If it turns into ice, will it no longer be poisonous?”

Yang Haiyan was stunned, looking at Qin Fang with incredible eyes. Speaking of which, because of the relationship between time travel and traveling through books, she has a sense of superiority that some modern people have in her heart. Especially after reading the book, she learned the plot and knew who she could socialize with. For example, when she was at the border, she went to Mrs. Prince's shop to sell soap prescriptions. But only now did she truly appreciate the wisdom of the ancients. No wonder saltpeter ice was discovered in ancient times.

The achievements of modern people are perfected on the basis of ancient people, but there is no data for the achievements of ancient people. They all figured it out by themselves. For example, the ancients were precocious and enlightened, but at that age, what were modern people doing? Basically the children are still being pampered. For example, Yang Haiyan herself was very fond of her when her grandmother picked her up.

But now, she finally understood that she had always looked down on the ancients. There was an uncomfortable feeling in her heart. For the first time, she realized that her mentality and thoughts all along were somewhat wrong.

Seeing Yang Haiyan looking at him with eyes wide open, Qin Fang was a little scared. He asked cautiously: "Yanyan, what's wrong with you?"

Yang Haiyan walked up to him, looked at him quietly for a while, then opened her arms and hugged Qin Fang: "Mr., you are so smart."

Qin Fang was bored, what's going on? Although he was happy to be praised by his wife, he was even happier to be hugged by his wife. However, he was a little uneasy. "Yan...Yanyan, don't scare me."

Yang Haiyan looked at his nervous look and really couldn't laugh or cry. She stared at Qin Fang's face with her big eyes, grabbed his hand with both hands, and said seriously: "Ms. sir, I really think you are smart. You see, Doctor Li said that saltpeter is poisonous and cannot be directly prepared. Ice, you will think of using saltpeter to make ice. Why are you so smart?"

Qin Fang weighed the meaning of her words and looked at her. She didn't look like she was deliberately trying to make him happy, but she was praising him seriously. So, Qin Fang snorted, concealing his inner joy, and said seriously: "Yanyan is so praised. Yanyan is so smart. If your husband is too stupid, how can he be worthy of Yanyan?"

Yang Haiyan: "..." I didn't know what to say for a moment, this person is poisonous.

It takes half a day, about two hours, to make ice from saltpeter. Two hours later, it was already midnight, and the saltpeter had frozen. Qin Fang sent someone to call Dr. Li who was back home waiting for the results. Dr. Li was shocked by the news about making ice with saltpeter, so he kept waiting without sleeping. Now Qin Fang sent someone to deliver the news, and he went immediately . Although it's a little inappropriate to go to the inner courtyard, it's okay since the general is here.

When Dr. Li entered the room and saw the ice in the basin and bowl, he was shocked again. As General Qin said, saltpeter can really make ice.

Qin Fang said: "Doctor Li, you see, I put the saltpeter in the basin, so the ice in the basin is with the saltpeter, but the ice in the bowl does not touch the saltpeter, because there is a bowl between it, you see Look, both types of ice are poisonous with saltpeter?"

Doctor Li said: "Okay, let me check it out."

Doctor Li took some ice from the basin and the bowl. At present, the ice in the basin and bowl has just formed and is not very strong, so it is relatively convenient to remove the ice. A quarter of an hour later, Doctor Li told Qin Fang the verification results: "General, the ice in the bowl is non-toxic and can be eaten, but the ice on the plate is not. The ice on the plate is slightly poisonous."

Qin Fang's face lit up with joy: "Yes."

Not only Qin Fang was happy, but Doctor Li was also happy: "It's a pity that saltpeter mines are not available to the common people, and there are not many saltpeter mines. Otherwise, if this ice-making method is popularized, the common people can also afford ice."

Making ice with saltpeter can reduce the cost of making ice, but saltpeter is hard to find. In ancient times, ordinary ores were not easy to find. Maybe the firewood has already been flying all over the sky.

Qin Fang said: "Indeed."

Listening to their conversation, Yang Haiyan remembered about boiling salt with sea water. Salt can be boiled from sea water, but can saltpeter be boiled from ice water? Saltpeter is the same as salt, but they are both crystallized. If saltpeter can be boiled in ice water, then the saltpeter can be used repeatedly. In this way, as long as ordinary people save some saltpeter, they can use ice every year.

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