Chapter 115: Telescope

Thirty-two-year-old Tang Dong walked on the way home, humming a minor tune of "The Legend of the West Chamber" in his mouth. Pen "Fun" Pavilion www.biquge.info

Tang Dong is now a new employee of the glass workshop, with a monthly salary of three taels.

He used to work in a soap workshop, but he was recruited into the soap workshop in December the year before when the soap workshop was expanded. Unexpectedly, after more than a year, the manager Li Yousheng said that he was honest and recommended him to go to the glass workshop to do things.

In early March, nine thieves came out of the glass workshop to steal the skills of the adults. The Lord of Ethics killed nine thieves, and made up nine men from the soap workshop and the textile factory to the glass workshop, and paid them three or two months a month.

Tang Dong was one of the nine lucky ones, and what he did in the glass workshop was to add a powder to the liquid glass. It's as simple as pouring the powder from outside the kiln while the molten glass is still hot. Tang Dong didn't even know what that powder was, and of course he didn't want to know.

Aside from the fact that the working environment is a bit hot, there are no drawbacks to this errand. However, compared to the monthly money of three taels, it is not a problem to be a little hot. Three or two months of money is enough for Tang Dong's family to live a good life.

As soon as Tang Dong walked to the mouth of the alley, the three children who were playing in the alley rushed up and shouted, "Daddy is back!" ”

"Daddy!"

Tang Dong's family used to be poor and married late, and now his eldest daughter is only seven years old. At this time, the eldest daughter was holding Tang Dong's legs, and the two younger sons circled around Tang Dong, calling their father constantly, making Tang Dong's face full of joy. The days when children can eat and play happily are just comforting to people's hearts.

Tang Dong took out a few pieces of champion candy from his arms and handed them to his eldest daughter, and said with a smile: "Give you candy to eat!" ”

The eldest daughter clapped her hands happily, and then took the champion candy. When the two younger brothers saw that their sister had candy in their hands, they immediately stopped and looked at their sister with a blank eye. My sister thought about it, counted the number of sugars in one, two, three, and four places, and said happily, "Three pieces per person!" ”

She took three pieces to the younger brother and three more to the second brother, and then grabbed the candy happily, and was not in a hurry to eat it, as if enjoying the happiness of having sugar in her hands.

Tang Dong saw his daughter's well-behaved appearance, and he was overjoyed, and hugged his daughter up. He walked into the house with his daughter in his arms, and saw the boss of the Xie family, who shared a house with him, learning to read there. Boss Xie held a brush without ink and repeatedly copied the calligraphy given by the teacher at the private school.

Tang Dong stood next to him and looked at it, didn't understand what it was, and said with a smile: "Boss Xie, what kind of word did you write?" ”

Boss Xie said: "What I wrote is the word 'righteousness'!" You don't understand, do you? ”

Tang Dong touched his face and said, "What are you doing here?" ”

Boss Xie said, "Didn't you pay attention? Half of the supervisors promoted by the owner are literate, and once they are literate, it will be very different in front of the owner! ”

Tang Dong chirped: "You still want to be a supervisor?" Don't look in the mirror either? ”

Boss Xie snorted, ignored Tang Dong, lowered his head and continued to practice calligraphy.

Tang Dong put his daughter down, reconciled with the boss and said: "Boss Xie, I have made up my mind when I do things today, I want to take out a loan to buy a house, and I am afraid that I will not share a house with you in the future!" ”

Boss Xie said: "Look, look at your pride, I've only been going to the glass workshop for a few days, and I can't look down on the rented house, I want to buy a house!" Three or two months of money, isn't it great? Boss Xie raised his head and said disdainfully: "I remember when you first came to this house the year before last!" A torn jacket? I don't believe you if you're not a beggar! ”

Boss Xie glanced at Tang Dong's eldest daughter again, and said, "At that time, you three children were yellow and thin, and they were skinny!" It's as if it's going to break if you touch it. It's only been a little over a year, and they've grown into chubby girls one by one! ”

"At that time, what did your woman call you, call you Tang Dayan! Now I know how to call you 'the master'! This man is getting really fast! ”

Tang Dong said with a smile: "Thanks to the good errand given by the owner!" ”

Boss Xie laughed and said, "You said that your woman knows that you are going to buy a house, is she happy to have her own house or is she worried that the money is not enough to spend?" ”

The two were talking, and Tang Dong's daughter-in-law, who was spinning upstairs, heard it. She ran out and shouted in surprise: "Master, are you going to buy a house?" We're going to have our own cottage? ”

Tang Dong glanced at the boss and smiled.

After making reading glasses, Li Zhi is going to make a telescope again.

Telescopes are a must-have item for marching and fighting, and they can gain insight and grasp opportunities from miles away, and of course they are products that need to be manufactured first. Li Zhi learned about Keplerian telescopes before traveling, and the structure of this telescope is very simple, just a combination of two convex lenses and two total reflection prisms, which can magnify distant images dozens of times.

This kind of simple telescope is enough for Li Zhi's current needs.

On April 3, Li Zhi found a jade polishing craftsman and asked them to grind out an 80 mm diameter convex lens objective and a 30 mm diameter convex lens eyepiece according to Li Zhi's drawings, and grind two total reflection prisms. After the lens was polished, Li Zhi measured the focal length of the two lenses, and asked a coppersmith to make a copper cylinder that was large in the front and small in the back, and folded in the middle, and loaded the objective, prism and eyepiece according to Li Zhi's drawings.

After finishing it, Li Zhi raised the telescope to take a look at the city wall, and found that the telescope was completed, and he saw a small scene in the distance.

Li Zhi estimated that although the Kepler telescope has a simple structure, it has a magnification of at least 25 times.

In this era, Western telescopes have just been invented, the value is expensive, Daming uses telescopes very few people, telescopes do not have a unified Chinese name. Li Zhi simply called it a telescope.

With binoculars, the scout's job is easy to do. Later, the scout stood at a high place and scanned with a telescope, and could monitor movements within a dozen miles. The need to rush to the vicinity of the enemy and engage the enemy's scouts in hand-to-hand combat is relatively reduced. In fact, Li Zhi's soldier's fighting ability is not strong, hand-to-hand combat is much worse than that of the Tartar scouts, and even the scouts of the thieves are stronger than Li Zhi's scout fighting ability. Once a fight began, Li Zhi's scouts were often unable to get close to enemy troops.

Telescopes can alleviate this problem to a great extent.

Not only that, but the artillery can also benefit from this telescope. With binoculars, artillery firing correction work is much more accurate. Later, when the correctors stood on a high place, they could clearly see where the shells landed several miles away.

Of course, with this telescope, the general can also better observe the battlefield situation, which is of great benefit.

The market for reading glasses has not yet opened, and there are few sales. Li Zhi asked the jade craftsmen who sharpened the lenses to stop making myopic glasses, and made binoculars together, making a few more for the scouts and artillerymen.

The telescope was of high military value, and Li Zhi decided not to sell it to the outside world and only equip his own troops. If a friendly force needs it, you can send a few as gifts when the situation allows.

When Li Xing heard that his brother had made a telescope that could see in the distance, he immediately rushed over from the barracks and snatched one. After getting the binoculars, Li Xing climbed to the top floor of the Beicheng Tower and looked around the city outside Fanjiazhuang for a while, very excited.

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Thank you for the 800 tip from Qitang, thank you very much! Thanks to the 100 tips of the wood tea and the small bone bookworm.