A tripod supports a cylinder, standing quietly on the third floor.
Hu Mengying asked curiously: "What is this?"
"Viewing mirror!"
Wang Yuan pointed to the eyepiece and said: "With your eyes facing here, you can clearly see the stars and the moon in the sky at night."
With water jade, transparent glass was made, and Wang Yuan made many convex lenses and concave lenses!
It took more than half a month to build an astronomical telescope with a magnification of 70.
In order to make it easier for people of this era to understand, he changed the name of the Sky Observing Mirror.
“So amazing!”
Hu Mengying said in surprise: "Isn't this the same as a telescope that can't see the sun?"
She had used a telescope and seen the scenery several miles away, and knew not to look at the sun.
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Holding his slender waist and sniffing his long black hair, Wang Yuan hummed softly: "Well, it will hurt your eyes. Look at the moon and stars at night. It's fine!"
Hu Mengying felt weak all over and fell into Wang Yuan's arms, her heart beating faster: "Son, what does the moon look like? Is it a luminous pearl that shines at night?"
Looking at that shy and pretty face, Wang Yuan straightened the bridge of his nose and said, "No, the moon is full of pits, like a bare valley!"
"ah!"
Hu Mengying couldn't accept it for a moment: "This, how is this possible!"
In the hearts of great people, the moon is a bright pearl hanging in the sky, so how can it be like a valley with craters and valleys?
Wang Yuan did not explain: "Anyway, what I see is the valley with rugged valleys!"
If you talk about the earth and the moon to people who have no contact with science, it will be difficult for them to understand.
Only by letting them see it can we break their inherent concepts bit by bit.
First break the illusory ‘heaven’.
"oh!"
Hu Mengying was startled: "Son, what does the sun look like?"
Wang Yuan said casually: "The sun is just a big fireball, about 1.3 million times bigger than the earth under our feet."
"What?"
Hu Mengying was shocked again: "Sir, are you telling the truth? The sun looks so small, how can it be so much bigger than the earth!"
The sun is a big fireball. She can accept this concept. After all, it emits light and heat.
But she couldn't accept that the sun was millions of times bigger than the earth.
The sun above our head is as big as a sea bowl. How can it be so much bigger than the earth?
"Have you seen Black Tiger Mountain?"
Wang Yuan pointed forward: "Now you look at the mountain, it's as big as a palm, but when you get closer, it's a mountain. Think about the reason?"
Hu Mengying was startled and said: "This is because Black Tiger Mountain is too far away from us, and we see that they have become smaller."
"You can understand it this way!"
Without explaining the principle of how objects are imaged in the eyes, Wang Yuan simply said: "The sun is very big, but it is too far away from us, so we see it as very small. If it were not so big, how would the light and heat reach the earth? It is thousands of miles away.
If you burn a mountain, you won't feel the heat here, so you can imagine how big the fire is on the sun!"
"...That seems to be the truth!"
Hu Mengying was stunned and nodded, looking at Wang Yuan's beautiful eyes with fascination: "Young master, you are so knowledgeable, I will be willing to die if I can win your favor!"
Wang Yuan's heart felt like a cat's paw when he saw her charming appearance, and he pushed her into his arms fiercely: "Little hoof, are you trying to tease me?"