novelaction Chapter 146
Chapter 146
In an environment like ancient times where there is no interference at all, isn’t that so~EZ!
After turning on the walkie-talkies, Wei Wu took one of them and pressed the call button to start testing.
"Hello, hello, 123, ABC, Wantu Wantu, very good, no problem."
Wei Wu just did a simple test, but the result made all the craftsmen's eyes widen.
The classroom, which was originally a little noisy and chaotic, suddenly became so quiet that you could hear a pin drop.
It was as quiet as if all twenty-six people in the classroom had disappeared.
What did they see, no, what did they hear?
I heard Wei Wu talking, yes, it was normal talking, but I just couldn't understand the words.
But that's not important. What's important is that the sound came from another black box.
Just as the craftsmen were stunned, Wei Wu waved towards Song Zhong.
"Take this and go anywhere within ten miles. When you get there, speak to me using this."
Song Zhong took the walkie-talkie from Wei Wu with a confused look on his face, but he couldn't move his legs.
Seeing this, Wei Wu simply called Zhang Hai and asked him to take Song Zhong out of the classroom.
At this time, the craftsmen finally came to their senses.
"Oh my god, did you hear that just now? That black box actually made a sound!"
"That's not the key point. Didn't you see that Vice President Wei was holding another black box while speaking?"
"Oh my god, how did you do this? Is it a magic trick?"
The twenty-six craftsmen were discussing below, and the person who had first stood up to question Wei Wu stood up again.
"Sir, can you explain to us why your voice appears in the other black box?"
Wei Wu was deeply impressed by the person who was the first to stand up and question him.
Seeing that this person was the only one in the audience who dared to stand up and ask him, he became curious about this person.
"What's your name? What craftsman are you?"
"I am Sun Chang, a blacksmith."
Wei Wu nodded, and then asked a question in return.
"Sun Chang, let me ask you, what does sound mean to you?"
What is sound?
Upon hearing this question, Sun Chang's brows immediately furrowed.
Sound is just sound, what else could it be?
Just when Sun Chang was confused, Wei Wu gave a direct answer.
"Let me tell you! The essence of sound is vibration. The vibration of an object generates sound waves that propagate through the air."
"To use a simple analogy, your throat is a pebble, the world is a lake, and your speech is like throwing the pebble into the lake."
I have to say that Wei Wu's metaphor is quite good, although it is not particularly accurate.
But it can give craftsmen a very intuitive understanding.
"You can try putting your hand on your throat and feel whether it vibrates when you speak."
As soon as Wei Wu finished speaking, the craftsmen immediately tried it according to what he said.
Facts proved that Wei Wu was right, but the craftsmen were not surprised.
This kind of thing can be felt when you talk in daily life.
What really concerned them was that the essence of Wei Wu's words was to shake the speech.
Especially Sun Chang, as a blacksmith, he felt deeply about this.
"Sir, when iron objects strike each other, the sound is produced by the vibrations in the air."
"I have a question. What is the air you are talking about?"
Wei Wu smiled slightly and explained casually:
"Air is a general term, just like pig iron, wrought iron, and refined iron are all called iron."
"Air is composed of many gases. It is everywhere in the world, and the air we breathe is one of them."
"But you won't understand even if I tell you now. I will teach you this knowledge little by little in the future."
After saying that, Wei Wu reached out and knocked on the table, and the classroom suddenly became quiet.
"As I said, sound is the vibration of an object that creates ripples like water ripples, and these ripples gradually spread out."