Wu Lin nodded in agreement.

…

At this time, Zhao Ji, who was standing on the high platform and leaning on the railing, heard the examiner call out Wu Jie's mounted archery score. He looked at the archery target Luzi at the mounted archery range in the distance and was a little surprised.

It was unclear where the arrow hit.

He then ordered to his eunuch: "Take out my telescope."

The eunuch in the chamber obeyed the order, opened a long sandalwood box wrapped in yellow silk, carefully took out the monocular telescope, and presented it to Zhao Guan's family with both hands.

The Privy Council officials behind Zhao Ji, including Duke Zheng Juzhong of the State of Yan, Cao Fu, the imperial censor, Li Gang, the young prime minister, and Zong Ze, deputy envoy to the Privy Council, were all very confused.

They didn't know that the Zhao Guan family was using the single-tube object in front of their right eyes and looking into the distance. What could they see?

Zhao Ji was using this monocular telescope. After he returned to Beijing from the expedition to Fangla last year, he relied on his knowledge as a time traveler and asked the Beijing Artifact Manufacturing Workshop to make it according to his design.

When Zhao Ji made telescopes in the Song Dynasty, the glass lenses he needed were made by the manufacturing workshop using the raw materials he knew for glass production, such as limestone, soda ash and quartz, in different proportions.

Of course, the Beijing Artifact Manufacturing Factory currently has no way to mass-produce glass, and can only produce the glass needed to make about a hundred telescopes every month.

The telescope designed by Zhao Ji is designed based on the principles of Kepler telescopes that he knows.

In 1611 AD, the German astronomer Kepler used two biconvex lenses as the objective lens and eyepiece respectively, which significantly improved the magnification. People call this optical system a Keplerian telescope.

Later generations of Kepler telescopes were mostly used as military telescopes due to their excellent performance.

However, the image of the newly developed Kepler telescope is inverted, so an erect image system must be added in the middle. The erect image system is divided into two categories: prism erect image system and lens erect image system.

The Puller telescope designed by Zhao Ji has a relatively simple prism erecting system between the objective lens and the eyepiece.

At this time, Zhao Ji saw through the telescope that the ten arrows shot by Wu Jie just hit the target deer, but only six arrows shot into the center of the deer, and the other four arrows only shot into the target deer.

the edge of.

In fact, during the Song dynasty martial arts examinations on mounted archery, the martial arts examiner rode on a running horse and bent his bow to set an arrow. As long as he could hit the deerskin target, even if he did not hit the bullseye, that arrow would still be counted as a perfect score.

of.

After all, in the martial arts mounted archery competition, the target made of deerskin was too small. It was only five inches long and three inches high. The mounted archer must also ride a running horse, at least 100 meters away from [Deer].

Go fifty steps away and shoot an arrow.

Therefore, although Wu Jie's horse speed is not that fast in mounted archery, he still does it according to the rules. There are no violations, and his full marks in mounted archery are valid.

After Yue Fei and Wu Jie finished riding and shooting, the next ones to appear were Wu Lin, Yang Zaixing, Niu Gao, Wang Gui, Zhang Xian and other martial arts masters...

Zhao Ji, who was on the general stage, put down his telescope and looked back. Zheng Juzhong, Cao Fu, Li Gang, Zong Ze and others were all looking at the telescope in his hand with great confusion.

Zhao Ji smiled slightly and said: "Sir Liang, please ask the chamberlain to open the box I brought and lend each of you a telescope so that you can see clearly the martial arts riding and shooting competition."

Liang Shicheng immediately said with a smile on his face:

"Old slave obeys the order."

………

When Zheng Juzhong, Cao Fu, Li Gang, Zong Ze and more than 20 court officials received the telescopes lent to them by Zhao Guan's family and thanked them;

These court officials who had read poetry and had countless experiences imitated the Zhao Guan family in using telescopes. When they looked at the target deer on the riding range so far away, it seemed as if they were right in front of them.

This shocked them greatly.

Zheng Juzhong exclaimed: "Zhao Guanjia is like a heavenly being. The things he designs and makes can be said to be clairvoyant!"

Cao Fu also exclaimed: "Just now, the humble minister almost came to remonstrate: 'Why are the officials so obsessed with this toy?'

I never thought that using this telescope would be my fault!"

However, Li Gang and Zongze almost spoke in unison, shouting in surprise:

"If this telescope is used in the army, wouldn't it be possible to see enemies hundreds of miles away?"
Chapter completed!