Chapter 209: The Arctic Courtyard

Tang Yan smiled: "Enlightenment is late? Last year, the mountain chief was embarrassed, my master and apprentice were good! ”

Long Changqi was not ashamed at all, and waved his hand and said: "The world is hypocritical, and I am also afraid of losses!" I almost missed a good boy and a good cook! ”

Tang Yan didn't bother to bother with this naughty old man, he obviously liked Su You so much, but he just put on a strict shelf, aren't you tired?

smiled: "Recently, I learned that the goose quills made by Meishan are made of only goose feather hard tube parts and bamboo tubes. ”

"Where are the goose feathers? But it turned out that it had already been collected and stored by Mingrun, and the abandoned bamboo knots in Inoue were now of great use in the arrow branch schoolwork! The surrounding states and counties all breathed a sigh of relief, and only praised Zhang Renfu's righteousness, Lao Tzu was a hero, and Lao Tzu took the drudgery that Lao Tzu gave them. ”

"The bamboo shavings produced by pulling the arrow shaft have now been put away by him, and he doesn't know where it will be used in the future, in short, it seems that this is also a useful knowledge!"

"Fine, fine, pure, it seems that this child is going to pursue it for a lifetime. Don't say it, Chief, if you improve it into a set of theories, you can make a school of thought if you don't do it. ”

Long Changqi began to get angry again: "The problem is that he fishes all day long, and he lives up to this talent!" By the way, where did this kid run away?! ”

Tang Yan said: "It's not Xiu Mu today, he went to the Arctic Courtyard." ”

Long Changqi was slightly satisfied: "Well, I have been going to the Arctic Academy recently, and it seems that Yunxue is grasping it tightly." ”

Tang Yan rolled his eyes: "Mountain chief, you think too much, this year in May, the ugliness began, and the guest star went out a few inches southeast of Tianguan, and it is still there." He went to discuss astronomy with Daochang Zhang......"

Long Changqi's beard floated up again: "It's really an angry old man!" Come back and see the board that doesn't hit him! ”

……

Su You didn't know that Old Man Long's board was ready again, and he was in the Arctic Courtyard with great interest instructing the children to test the telescope.

The principles of optics have been taught to children since the advent of glass.

After learning trigonometric functions, children will have a thorough understanding of the principles of optics.

The refractive index and total reflection can be measured experimentally.

Then there are convex and concave lenses, which are called condensers and diffuser mirrors in applications.

If you combine spheres with different curvatures, you can also get lightweight reading lenses and myopia lenses.

The difficulty of the process has been overcome, and various types of copper molds can be turned out on the pedal grinding machine by using different curvature steel sheets as clamping knives.

Then take the copper mold to the water glass mortar and turn the mold, you can get a variety of lens templates.

After getting the rough lenses, you have to put on a wool wheel and polish it with sanding paste to get smooth and transparent lenses.

However, to combine the lenses into a telescope, a lot of calculations are involved.

However, this time, Su You's experience made the Kolongli optical team take a big detour.

The baby's experience came entirely from the later binoculars and the Galilean telescope seen in the book, both of which were convex and concave lens structures, so he vowed to ask the babies in the laboratory to measure the focal length through candles, imaging plates, and lenses on the guide rails, hoping to calculate the exact value of the length of the telescope's barrel and magnification.

The calculation is quite difficult, and the progress of the experiment is slow.

Until one day, Liu Si was bored and replaced the eyepiece with a convex lens, and then found that the double-convex lens structure can also get the real image of a candle behind the eyepiece.

And this structure makes the calculation very convenient - the distance between the eyepiece and the objective, that is, the length of the tube in the design, is equal to the focal length of the eyepiece plus the focal length of the objective!

As a special bonus, since there is a real image between the two lenses, the reticle can be easily attached! It's the center cross!

For the orphans of the Land Temple, it was a landslide and tsunami discovery.

The omnipotent young master, the leader of science and engineering, and the mentor of the orphans of the Land Temple, whose theory was overturned by the inheritors for the first time!

Liu Si was extremely anxious and privately reported the results of his discovery to Su You, and then waited worriedly for the verdict of the little young master.

Su You immediately gathered all the children, solemnly announced Liu Si's discovery, and personally awarded a small medal of his own design, which Shi Fu had cast with sterling silver and sand gold—the Discoverer's Medal.

Then tell Liu Si that the little young master fully supports him to turn this discovery into a real thing, how much money is needed, how much brass, how much glass, how many people help calculate the experiment, whatever!

Everyone was greatly encouraged, and the little young master said, if anyone can still have such a discovery in the future, they will be treated the same as the fourth brother!

Through this incident, everyone also understood a truth, the little master is not a god, what he can do, he can do it through hard work. Even if he can't do it, it's not impossible for him.

Of course, in fact, just one discovery is not enough to support the invention of a telescope, and Su You's participation is still indispensable.

However, the mind was opened, the difficulty was reduced, the enthusiasm was mobilized, and things started to go smoothly all of a sudden.

Liu Si also found that the size of the eyepiece is suitable for the size of the pupil, and there is no need to make it too large.

After experimentation, the size of the eyepiece and objective lens was finally set at 50 to 7.

The cross on the differentiation board was found by Su Xiaomei and made from the filaments drawn from the spider's cocoon.

Soon, a three-stage retracted, 10x telescope with spiral fine-tuning was assembled, and then it was mounted on the theodolite, which became a tool for everyone to observe the sailing ship in Kolong.

Until one day, the ghost of the bad baby mysteriously moved the telescope's observation object to the moon.

The crater on the moon frightened the baby, and ran into the study with a roll: "Young master...... Master, I'm in trouble...... I can't see Chang'e......"

Su You was also frightened, Lao Tzu made this for you to do surveying and drawing maps, and I didn't ask you to take it to see the moon!

If you don't have the merit and fame to dare to spy on the heavens, you don't want to live!

Zhang Qi lay on the ground and hugged Su You's small thighs: "Little master, save me...... You didn't tell me you couldn't look at the moon, you couldn't be punished for not teaching......"

Su You laughed angrily: "Yo? Have you read the rich country chapter of "Xunzi"? Brother Bad Wa deserves to be the economist of the Land Temple...... Get up! Little Master has a way! ”

Therefore, the current observatory has been moved to the Arctic Courtyard.

This is a branch of the Heavenly Master Dao, and observing celestial phenomena is exactly their scope of responsibility.

In view of this incident, Su You also brainstormed that the laboratory could no longer herd sheep like this, otherwise I don't know what moths will come out.

Soon, the "Regulations on the Operation and Management of Chemical Laboratories", the "Regulations on the Operation and Management of Physical Laboratories", the "Regulations on the Application of Valuable Equipment", and the "Regulations on the Application of Special Funds for Experimental Projects" were promulgated one by one.

No one is allowed to make trouble! Little Master Shi has to lead by example, not to mention you!

A group of babies jumped up and down around the telescope in the Tianqingguan Arctic Courtyard, and Zhang Daochang was massaging Su You's eyes while talking in a low voice, without any dignity of a teacher.

"Young master, is the old way still good?"

Su You closed his eyes and enjoyed: "Comfortable...... Dao Chief, your eye exercises can be drip ......"

"The little young master said and laughed, this is also a virtual and clear skill, the old Tao has been fighting for 20 years, and he wants to make the young master deaf and clear, and the eyes are the most important ...... for those who read."

Su You said: "Don't lie to people, and you're thinking about my good things!" ”

Zhang Daochang was not tempered at all: "How can you lie, you are the future husband of my Heavenly Master Dao Xu Wei Xianqing, and the righteous brother of the contemporary Heavenly Master, we are a family, this family, how can we talk to two families?" ”

"Lao Dao is more dedicated to you than Zizhan, and now the little master's poetry is famous in Meishan, so there is a little credit to Lao Dao's tutoring rhyme, right? Besides, it took me twenty years to work hard......"

Su You raised his hand angrily: "Stop!" I got you a bronze man, and my brother thought I was doing it too realistically, saying that it hurt the heavens and peace. I don't understand, it's just a mannequin, isn't it more real than it is for you to master the meridian acupoints? Can you only experiment with white rabbits and mice? ”