A rough bamboo tube appeared in front of Yang Heng. Take it for a look. It turned out that the two bamboo tubes were put together. If you want to adjust it, you need to slowly stretch it. It is not even fixed. Need to put a small stick on the edge. .
"This is your masterpiece like this, it's such an ugly thing." Yang Heng got angry at first glance. "Did I not give you some artisans, you can't let them use copper or some metal to make them. A metal package to adjust the distance? "
"Dongjia, Dongjia, you do n’t want to get angry. Isn't this to save Dongjiao some money? It just wastes a lot of crystals on what kind of concave lens and convex lens you are talking about, and wastes some copper and iron. It doesn't increase your It ’s a burden. You need to know that every set that is not suitable will waste a set. It is better to make it with a bamboo tube and then use metal. "
"Well, let me say hello to you, isn't this metal recyclable? Why are you so embarrassed? Besides, the materials I give you are for you to waste. There is no waste. Where can there be harvest, let me see What do you do with these lenses. "
"This is very good. You can see far away from the east house. You can see the little iron at the top of the chimney. Right, the east house, what is the iron? A thinner wire was pulled down, and the lower part was buried in the ground, wasn't it a waste? "What is it? You noticed it, it was a lightning rod, but can I tell you, you haven't jumped up yet.
Yang Heng naturally would not make that kind of low-level mistake. Constructing a high blast furnace chimney also destroyed the lightning. So when designing, I designed the lightning rods, but said that this is a standard configuration. I didn't tell the craftsmen what effect it played, but the craftsmen at this time were really serious. Although they didn't understand, they still installed them according to their needs, but this made these priests see it.
"Come, let me see." Talking, Yang Heng took the humble bamboo binoculars and looked up at the distant chimney. "Well, yes, it's according to my design. There is no change." This really can't be changed, how high the lightning rod needs to extend to the highest point of the building, and how thick the iron wire is to pull down. They all have certain specifications, but I do n’t know how deep they are buried below. Is it necessary to cover a piece of ground with loess below according to Yang Heng ’s requirements, and some iron bars are buried and welded to the above iron wires? Together, even a certain amount of salt must be poured into the loess to increase the electrical conductivity. Especially in this era, there is no grounding tester. You cannot know the exact grounding resistance. Do not let the grounding resistance not meet the standard. Let the lightning strike the iron bar. Wrecked, even the smoke pipe.
However, the effect was good, because Yang Heng found that there was a melted trace on the top of the lightning rod, which seemed to have been struck by lightning, and there was nothing below, it seemed to be effective. What's the difference, Where it was struck by lightning, the melting point was quite smooth, but it was not a melting point that was burned by hand.
This lightning rod, as long as people in Yang Heng ’s time would know it, but it needs to be done well, then not everyone can know it. If you use an iron chain as a lightning protection lead, then it is only God-made thunder. It will only be used when looting. Otherwise, if ordinary people use it for lightning protection, the first lightning strike will strike this person into carbon. Therefore, as a lightning protection, you can't really mislead people, lightning rods, leads, and even ground resistance. However, it is indispensable. If there is a problem in any link, it is a big problem. In the previous life that Yang Heng passed through, the unit with a lightning rod was required to test the grounding resistance twice a year. Otherwise, not only will it not be protected from lightning, it will also have a counter-effect. It was intended to protect the building or the equipment inside the building from lightning. However, if the grounding resistance is not detected properly, it will lead to lightning and destroy the equipment or building. This can be said is not a common sense that the public can know.
"Well, yes, yes, it seems that these people did as I ordered." "Dongjia, you are talking about the place where the iron bar is grounded, and I saw that they waste a lot of coarse salt, so just pour After entering the soil, I even poured water. Whatever you told me to do, melt it and try to get as much as possible. I think they are a waste. You must punish them well. " Didn't you see the effect, ah yes, maybe you threw aside and shivered during thunder. If you heard the sound, you would be even more scared.
"Dongjia, it seems that they have done too much bad things. That thunder, lightning, exploded above their heads, but maybe it didn't reach the point where they hacked them. God just yelled at them. Slashed them, but scared us to death. Do n’t do it wrong, split it on us. ”
At this point, Yang Heng hadn't asked them before, and they took the initiative to say it, just to let Yang Heng punish those craftsmen. "This is what I asked them to do, otherwise the chimney isn't broken, you can see if the stone on the top of the mountain is broken. The stone was very big a few years ago." Yang Hengzhi He pointed at a stone on the top of the mountain, saying that naturally there is iron in the stone, otherwise it won't be split by lightning.
"Well, yeah, did this stone have done bad things in the last life, and this life has turned into a stone for Thunder to split." You really think that if this stone had a last life, it would have been millions of years ago.
"Xuewen, can you show this to the old way?" Yuan Tianzhen was anxious on the side, what kind of thunder, what kind of stone or something? This is not what they can know. That is God ’s thing. Avoid, this study is really too arrogant, it is better to take care of the things in his hands, isn't this what can see the stars.
"Be careful, Yuan Daochang, this one will hurt your eyes. Don't look at the sun." "Yeah, yeah, the last time I looked at the sun, my eyes couldn't see anything for a few days. Why is this so powerful? "" As long as you remember, you do n’t have to look at the sun, and the principle, I will slowly tell you, okay, Yuan Daochang, here is a look for you, remember, you must not look at the sun. " "Okay, okay, learn the text, I just listen to you." Yuan Tianyi said impatiently.
"This, I still can't give it to you, you guys, are there any obsolete convex lenses? Take one out and I will show you an experiment." No way, Yang Heng doesn't want Yuan Tianchi to hurt his eyes, otherwise What to do if he becomes blind, but the priest has been sinned. It is estimated that they watched it when the sun was not too bright. Otherwise, he could still do this, it was really fatal. This is a bit exaggerated, at least his eyes will be scrapped. of.
"Yes, yes, I'll give it to you." "You see this is a piece of wood, I will let it burn." Talking, Yang Heng shattered a piece of rotten wood with his hands. Place, it is easier to burn, and then pointed the sun with a convex lens, focused into a small bright spot, which is too bright, and a bit dazzling, "This can burn, will not." Whether it is Li Gang or Yuan Daochang, They all have some doubts, but Sun Daochang and the other three priests, even the young lady Changle, Yu Zhang and others believe in Yang Heng. They don't believe that it can ignite, but they believe that Yang Heng can ignite it. It seems that there is some contradiction.
"Ah, it's smoking, it's smoking, it's up, it's up." The young lady jumped up happily. Heng's brother said that there was nothing wrong, that's what other people mean, Yang Heng is really good, and Yuan Tianyi , And Li Gang are stunned.
"Is this the impotence in the legend, but it seems that the impotence is not made of crystal, but a bronze mirror." Sure enough, Li Gang was somewhat knowledgeable and soon contacted the impotence. What time did impotence occur? He knew it.
"Professor Li, have you heard that this kind of thing can't be done?" Yuan Tianzhang asked Li Gang in surprise, why didn't he know it? These people seemed to know it. (To be continued.)