Chapter 1652 (1/2)

Led by Yun Hao, the group approached the source of the sound.

At this time, the sky above, but suddenly dark clouds, lightning and thunder.

Boom boom!

Raytheon seems to be hiding in the clouds, which is particularly dull. Although the air has been moist to the extreme, it never really means to rain.

Soon they came to the two walls.

Here are the two boulders raised at the bottom of Shentang Bay. A narrow channel is just formed between the two boulders, and the sound of killing comes from the two boulders.

They went to the side of the stone wall and looked inside. The two huge stones are more than ten meters long and more than ten meters high. In fact, the passageway is less than one meter wide and more than ten meters long. Nothing can be hidden inside. Everything is clear at a glance.

But the sound of killing came from the two boulders.

And With the sound of thunder, more and more loud.

Fortunately, Yunhao and his group came here. They are very brave. Even in the face of such strange things, they don't have much fear. If they were ordinary people, they would be scared to death just to hear the sound of golden drums.

”Well, what the hell is going on?” Cloud resolutely looked at the boulder and said, ”is it difficult? In this Boulder, there is an entrance to the secret place. At this time, a war is breaking out in the secret place. That's why there is a voice coming out?”

”Sure enough...” Yun Hao suddenly sighed.

The crowd looked at Yunhao, and he asked in vain, ”brother Yunhao, do you know anything?”

Yun Hao nodded and said, ”do you know, tape recorder?”

”Recorder?” The crowd looked at Yun Hao with an incomprehensible look.

Yun Hao is not surprised by the reaction of the public.

It was in 1898 that Danish people invented tape recorders. In 1907, tape recorders entered the practical stage. During this period, however, China's science and technology have not gone far. Therefore, it is normal for the people of this era not to know what a tape recorder is.

”If you don't know the recorder, you always know the gramophone?” Said Yun Hao.

”Oh, I've heard of that.” Yun daoran said, ”something that can preserve sound.”

”That's right, the principle of the recorder is to use the AC bias method to save the sound...” As soon as Yun Hao said this, he felt that he was playing the piano to a cow.

Chiyang doesn't talk about it at all. The five members of the cloud family can answer their questions about Chinese and arithmetic, but they can't say anything about electromagnetic effects It's better not.

”Generally speaking, the recorder needs electricity and magnet, and then through specific conditions, it can save the sound and play it again.” Said Yun Hao.

After simplifying to the extreme, they can finally understand what Yun Hao said.

Then Yun Hao pointed to the two huge stones in front of him and said, ”these two stones are magnets, and now There is thunder and lightning in the sky, and there is no rain. The current in the air is higher than usual, so it just meets the requirements of tape recorder, recording or playing. Do you understand what I say? ”