"Then what's the use of this thing and physics?" Tuo Huan asked.
"It's very useful." Guo Kang pointed to the tube: "This thing can prove that the air around us exists and has the same pressure as water. Just like fish living at the bottom of the ocean, we Living at the bottom of an ocean of air.”
"So that's it." Dmitri was very interested: "Then heaven is above this ocean of air?"
"That's not clear." Guo Kang did not answer directly: "Aristotle was, after all, a pagan philosopher before Brother Tian, and his knowledge of Heavenly Father, Brother Tian, and heaven was limited. Although this is not It hinders his great contribution in the field of philosophy, but we should not force it on people of different eras. We still have to study the parts he has not yet touched upon."
"That's true." The monks agreed.
"Then the pressure is so great, why can people still be round? And some people can gain weight?" Tuo Huan asked doubtfully: "For example, look at my sister. Why is she not under pressure... Well, just like Li Anning Flat?"
"People are not sealed, so how can you compare?" Guo Kang retorted: "Look at this glass tube, is there a section empty at the top? It is surrounded by mercury and glass tubes, so you can see the air pressure."
"What does a person's appearance have to do with air pressure?" He said helplessly: "I am flat, so why should I blame the air..."
"ah……"
"In short, this device is equivalent to allowing the pressure of mercury to confront the pressure of air." Guo Kang ignored him and continued to explain: "The fact that the mercury finally stopped shows that the forces on both sides are equally strong. This is because the mercury It's very heavy, so it can be seen directly like this. But if it were replaced by lighter water, it wouldn't be so convenient to observe."
"And this device is also valuable to us." He said to several monks: "Bring over the elbow pipe."
One assistant left to get the equipment, while the others followed Guo Kang's request and put the tube at other angles for everyone to see.
"The pressure of the air can only support such high mercury, so no matter what shape or height the glass tube is, there will only be so much." He said: "And above the mercury in the tube, this section will fall and be pulled out. In this space, there is almost no air and no liquid. I call this area a 'vacuum'."
The monks were used to him saying Chinese words casually, so they just regarded it as another term and paid no attention to it. I had no pleasure but I had an impression.
"I seem to have heard it introduced by Master Wang. Isn't this a term from the White Lotus Sect?" He pointed out: "These people seem to have a close relationship with the Red Turban Army in the late Yuan Dynasty, so we have known about them."
"Uh, that's right..." Guo Kang scratched his head: "Anyway, as long as it can express the meaning, I think it's quite appropriate."
"Of course, if the White Lotus Sect is interested, can we also support it?" He added: "The early development of natural philosophy did require the help of theology to a large extent."
"Maybe they can also enrich their theological research, calculate how many inanimate old mothers can live in the empty hometown in the mercury tube, and promote the development of scientific research in the Ming Dynasty..."
"Ah..." Tuohuan was dumbfounded again and couldn't answer the question.
While the others were talking, the assistant had already brought in another tube. This glass tube is thinner than the one before, but there is a bulging bubble on the top of the long tube, which looks like a weird hammer.
A copper rod is inserted into each end of the round bubble. The holes should have been drilled during production and then fixed with molten glass.
"This looks like the instrument in Brother Tian's hand." Dmitri keenly discovered the similarity: "But why is it made in this shape?"
"Because this kind of tool needs to maintain a vacuum." Guo Kang pointed to the glass bubble.
Several assistants cleaned the previous glass tube, filled this tube with mercury, and then stood it up again. The tube was very long, and the mercury dropped as before, finally stopping in mid-air.
"Look, the glass bubble above here has a vacuum inside." Guo Kang said: "We use ice cubes to compress it, and at the same time, we use hot iron pliers for shaping glass to plug the thin tube below and cut it off. , In this way, a relatively stable vacuum glass bubble with electrodes can be obtained."
"So what's the use of it?" Tuo Huan persisted: "I think this thing is probably not cheap."
"What's the use of it? If it succeeds, it will be a miracle of physics." Guo Kang was too lazy to pay attention to him: "Even the half-baked product we have now has great uses."
"Show him our manually extracted light bulb," he ordered.
Another monk then made another trip and brought a hollow glass cylinder. It also has electrodes plugged into both ends, and there is an additional interface in the middle, which is fixed with a valve and a leather strip.
"I used copper, leather and lubricating wax to make a pump to pump air out of this thing." He said, "Although the pumping is not clean, it is enough. There is a little bit of mercury in this glass tube. When you use it, heat it first and then energize it to emit special light."
"This kind of light cannot be seen clearly with human eyes, but it is very powerful. Do you remember the little bug I told Wu Han? It can kill all the bugs." Guo Kang said: "Let's find a room If you put this thing inside a house, and then people supply power to it from the outside, it will be effective."
"The Slavs can't push it all day and all night, but it's not difficult to deal with a light bulb. Just find a water-powered mill."
"If we can kill these insects, will there be hope for our military rations?" Tuohuan was still thinking about this issue.
"This still needs to be tested, but other uses are worth looking forward to." Guo Kang said: "The vacuum tube has not been tested yet, but I cooperated with a nearby village and tried this mercury lamp."
"Huh? You didn't tell me." Tuohuan asked doubtfully.
"It was your sister who told me that I remembered it." Guo Kang said, "The last time she talked to me about the ladies around her giving birth, I told her about the cause of puerperal fever."
"I just thought that we could set up a special delivery room and use this mercury lamp in advance to kill poisonous insects in the environment. Paired with our high-concentration spirits processed with lime, it can ensure that the environment is much cleaner."
"If she didn't tell me, I wouldn't have thought of this." Guo Kang spread his hands: "So, I found a village with pregnant women and modified their mill. When needed, just change two gears and the power can be transferred. Lead to a specially built room next to the mill.”
"The priests in their village also quickly memorized the prayers and mantras, and probably knew how to use this thing. I tried to let them operate it. Although it was not very stable, it did keep the light on. The whole room was blue and purple. of light.”
"Pregnant women in their village, as well as those from several neighboring villages, all gave birth there. The results were very good, and there were indeed no problems. The villagers were very moved, thinking that this purple house must be divine, but it was a pity that when people entered Turn off the lights, otherwise everyone will be born in a purple tent."
"The priest there also came here every day and said that in the future, he would like all the children in the village to come to us to receive theological enlightenment. Some time ago, Dean John asked if we should just build a school. That's how we came up with the idea. "
"No wonder, this is a miracle of physics." Brother Dmitri also sighed.
(End of chapter)
