Chapter 213 Simulation of floating island experiment (please vote, comment, subscribe, and like)
The skeleton on the fossil is very long, about two meters long and as wide as a palm, but it is definitely a fish bone. The skeleton of a snake will never look like this.
So this should be a fish similar to deep-sea hairtail, but how can a creature from the deep sea appear on land? In fact, this is easy to explain. Before, this piece of land rose from the seabed, so there is a lot of salt in the soil here. In this way, the cause of the salt lake is explained, but what about the iron ore that Luo Chong wants.
"Is this the stone that made the island fly?" Rui looked at Luo Chong staring at the stone and asked curiously.
"Not this one."
After Luo Chong finished speaking, he stood up and searched again, but still had no results. The main component of magnetite is ferric oxide, but after being exposed to the sun, rain and air erosion, it will soon become hematite, which is ferric oxide, which is actually dark red rust.
The soil on the ground here is iron red. Luo Chong is 100% sure that these red soils contain iron, but this is not what he is looking for. After millions of years of vicissitudes, even if there is magnetite here, the surface must have turned into rust, so he has to dig down.
Having made up his mind, Luo Chong quickly selected a place where the ground looked very red to dig. The tools he used were his bird-beak dagger and spear. It was very difficult to dig. Luo Chong was so angry that he cursed in his heart that he would definitely make an engineer shovel first when he made iron. The engineer shovel in his previous life was too convenient and could be carried everywhere.
Dali, who was standing by, saw Luo Chong start digging the ground and took out his copper axe to help. The two of them quickly dug a pit with a diameter of one meter on the ground.
After the surface red soil was dug up, a layer of white stone appeared. The color was a little yellow, there was no texture, and there was no glass luster. White stones with glass luster appeared near the salt lake, which could basically be identified as natural alkali, but this one was not. It was symbiotic with iron ore, so it should be saltpeter.
Luo Chong took the yellowish white stone to the lake, dug a small pit on the ground beside the lake, scooped some lake water into it, and put the stone in. The stone quickly dissolved, and then a layer of white smoke rose on the water surface, and a layer of white frost appeared around the small pit. This is the principle of saltpeter refrigeration.
Although magnetite was not found, the discovery of saltpeter was still exciting for Luo Chong. This meant that in the future, when making nitrates such as explosives, there would be no need to run to the toilet to dig soil, and from then on, the Han tribe would no longer lack the raw materials for making explosives, so Luo Chong could do more things with explosives. You know, even the simplest black powder requires a lot of saltpeter.
"Chief, this stone should not be the iron ore you said, how come it melted as soon as it was put into the water, and the water became so cold." Dali analyzed on the side.
"Well, this is not iron ore, this is saltpeter. You have seen it. It is the white powder that I asked the women to boil out of the soil in early spring. But this thing is also very useful. You can dig more next time. Remember this place. I will let you lead the team next time." Luo Chong explained.
"Yes, leader, I remember it." Dali heard that Luo Chong actually asked him to lead the team, and immediately observed the surroundings carefully, as if he wanted to firmly imprint this place in his mind.
After determining what the white stone was, the two continued to dig in the pit just now. Eagle leader Rui was still watching curiously. He never knew that there were white stones under the soil here, and they would melt when they touched water. It was amazing. There was
a lot of white saltpeter in the pit. Luo Chong and Dali dug for a long time, and they dug about one meter deep. It turned out to be saltpeter. This reserve seemed a bit large. They couldn't dig anymore. Luo Chong decided to find a place farther away from the salt lake to start.
The two took their weapons and walked a few hundred meters away from the salt lake. They found a place with red soil and sand and gravel on the surface and started digging again.
The ground here is very hard, and it is more difficult to dig than before, but hard work pays off, and this time I finally dug out something special.
At that time, Dali was chiseling the gravel in the pit with an axe. With one chop, a slightly larger stone was instantly smashed into two halves, and then the two halves of the stone flew to both sides at the same time and hit the wall of the excavated pit.
It was a fist-sized stone with a gray iron color. Luo Chong wiped off the sand on it with his hand and shook it in his hand. It was very heavy, heavier than ordinary granite. The broken cross-section had crystal lines and the cut surface was very flat. In the sun, it had a faint metallic luster, like a layer of gray gold sand.
Luo Chong held half of the stone in one hand and wanted to connect the two halves of the stone together again, but he encountered great resistance. This familiar feeling of rejection was exactly the feeling of playing with magnets when he was a child.
"It's this, it's this stone. This is a magnet stone." Luo Chong said with a little excitement.
"Is this iron ore? Why is it called magnetite? And I feel it is not as strong as our bronze. I smashed it with an axe. Chief, you are not mistaken, is it another stone?" Dali asked in confusion. Wasn't it said that it could break bronze? Now it seems to be the other way around.
"Just this little stone can make the island fly? You must be kidding, right?" Eagle leader Rui also said in disbelief.
"That's it. You can break it because it is stone, so the hardness is not high. The real strength is the iron contained in it. Can't you see that there is a layer of metallic luster on the cross section of this stone?" Luo Chong explained excitedly, and handed the ore to Dali, asking him to look carefully.
Dali looked at it carefully, and it was really as Luo Chong said, there was a layer of metallic luster on the cross section of the stone.
"It seems that there is really metal inside, but why is it called magnetite? Aren't we looking for iron ore?
Ah! Hey? How can this stone move and bite people? Is it alive?"
Dali was about to hand the two halves of the stone to Luo Chong, but as soon as he loosened his hand, the two halves of the stone suddenly turned over by themselves, and then clamped Dali's palm in the middle, which scared Dali and the Eagle Leader Rui beside him.
"Haha, don't be afraid, this is the magnetism of the magnet. It is not alive, it is just a piece of stone. Come on, turn it over and see if the place where it was broken just now can't be put together." Luo Chong explained with a smile.
Dali took the two stones down and touched each other with the broken surfaces just now, but there was an invisible force in the middle that separated the two halves of the stone. Even if you force them together, as long as you loosen them a little, the two halves of the stone will instantly bounce apart, but if you turn one of the stones over, the two halves of the stone will attract each other again.
"Hey, this stone is so magical." Dali said in surprise.
Rui, who was standing by, also took the stone from Dali and tried it like he had just done. The two halves of the stone could not be closed. There was an invisible force in the middle that repelled each other. Rui was amazed that there was such a stone in the world.
"Is this the stone that makes the island float? Impossible, right?" Rui still couldn't understand.
"Put the two halves of the stone upright, assuming that the lower half is the earth and the upper half is the island floating in the air, can you do it this way?"
Luo Chong explained to Eagle Leader Rui the principle of the formation of the floating island and asked him to experiment with this small magnet.
Rui held one half of the stone in his palm and put the other half on it. The two stones could not overlap, but the upper half would automatically turn over and then be sucked onto the lower half.
"It still doesn't work?" Rui looked at Luo Chong in confusion, hoping that Luo Chong would explain it to him clearly.
Luo Chong found another small branch nearby, and then broke it into four sections, fixed them around the lower half of the magnet, and then put the other half back between the four small branches. This time, the upper stone did not bounce off, nor did it merge with the lower half, but just floated between the four small branches, suspended there.
"See, if you assume that these small branches are the vines holding the floating island, then it will float." Luo Chong explained to them.
At this time, Dali and Eagle Leader Rui were stunned with surprise, their mouths opened so wide that they could fit a fist in.
What the hell is this four fat four.
(End of this chapter)
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