The Weapon Tycoon Who Traveled to Great Qin

Shang Wen doesn't care about the exercises, what he wants to do is to use astronomical knowledge to popularize the latitude and longitude. This has reached the point where it is urgently needed. Others sell you large tracts of land. And you cannot measure acceptance now. Then, your previous legal provisions will be regarded as a piece of waste paper. Such a serious test of the authority of the law.

Shangwen is for the authority of this law. They have to learn, and those Shangwen themselves are unwilling to learn astronomy knowledge, because it contains a lot of mathematical knowledge. If the explanation is not clear, it is likely to cause this knowledge to be terminated.

To this end, Shang Wen first copied a lot of relevant knowledge. A lot of knowledge is not enough, a lot of instruments are also needed. Especially the sextant. This is also an important measurement tool for naval navigation in the future. The octant was improved to a sextant and became the mainstream navigational instrument. It is still used today.

Shangwen felt it necessary to make both of these instruments. Only in this way can we explain to them objectively. Otherwise, they cannot understand abstractly. Knowledge is still too esoteric.

One of the more important original instruments in the instrument is the reflecting telescope. Fortunately, glass has now been developed. Mirror etc. Otherwise, because of reflective materials. Shangwen has a headache again. Reflecting telescopes also need a series of productions.

Observers can see the horizon through a mirror at the same time. The angle between them can be measured with a quadrant with a scale on the edge. The angle measurement range can reach 90°. In this way, the simple quadrant (angle measurement range 45°) can be measured Its height has doubled, becoming an ideal instrument for measuring latitude. This is the octant.

Subsequently, an improved model of the octant was used to expand the measuring range to 120°. This is the sextant. It is composed of a triangular frame with a 120° arc-shaped plate on one side with a scale and a movable Pointer. The reflecting telescope reflects the two celestial bodies with an angle to be measured together, and people can easily measure the angle and calculate the latitude of the ship.

This is the simpler measurement method that follows. But the principle is still not clear. Shangwen felt that a more intuitive way of explanation should be found. The method is to erect a pole on the ground and draw its shadow continuously. When the shadow is the shortest, record the direction of the shadow at this time. This is the true north direction. Measure the length of the shadow and the pole at this time, use the trigonometric function to calculate the sun elevation angle, and then consider the date of the spring (autumn) equinox and the summer (winter) solstice to be measured, and use the trigonometric interpolation to calculate the latitude of the direct sun point of the day. Get the local latitude value.

But this requires a known quantity. But not only these. Shang Wen hoped that his explanation would make them understand. In fact, the emergence of these things is due to Qin's artillery science. Artillerymen often take aim, they use a lot of knowledge of mathematics and geometry. Especially trigonometric mathematical functions. They have experience, but they are unable to switch. The surveying of engineers and soldiers has a very good transforming power. But their measurement cognition level has not yet risen to a high level. At this height, let Shangwen himself help it to complete.

Just when Shangwen was preparing to compile specific measurement methods. Two Qin Jun officers came to the door. They are officers and soldiers of the Seventh Regiment of the First Division. One is the captain of the colonel. One is a lieutenant and deputy company commander. The focus of their argument is a headache for Shangwen.

The reason is the military medal. Qin State used a new reward method. But the standard of reward is quite different. The difference is that the headcount is no longer calculated. Instead, it is calculated based on the effectiveness of the battle. This requires the Qin State Staff Department to establish a special department, the War History Department. They are responsible for collecting the front and back of the battle, and then determine the effectiveness of some people based on the list provided by the field commander. In doing so, it can provide a large number of teaching materials for military academies. At the same time, some shortcomings can be summarized. It can be said that it is more systematic.

The military merits are often determined based on the history of war. Because of what happened on the battlefield. Everyone is involved, it is impossible to know what happened to their neighbors. This is the uncertainty of war. This uncertainty is also an important reason for the inability to determine the attribution of some military merits. The man who wrote the war history record was himself an officer. He tends to write according to his own preferences.

"Sir, I think my nineth lieutenant should get a gold medal. Not a silver medal. Because based on his dictation, I guess, no, speculate that he should have killed a big man." The colonel said excitedly.

"Oh. Can you show some proofs?" Shang Wen asked.

"The battle has been over for a long time. There were other people on the other side at the time, and it was impossible to show the proof. Even the blood stains would have disappeared." Nine Lieutenant said excitedly. The colonel was restrained.

"This question is difficult to handle. But I will instruct the General Staff to investigate this matter. But I need you to provide detailed location, time, and related people. It is best to have their unit number and position. I need to find these." Shang Wen said patiently.

"No problem, sir." Lieutenant Nine said very cooperatively.

"Very well, you go back and submit a report. I will transfer it to the General Staff. The Gold Medal has not yet been awarded. The main reason is that some frontline troops have not yet withdrawn to their garrison. But I think it will be done soon. I hope you can do it soon. One point. If it’s more troublesome to reissue. But I don’t care, if it’s reissued, I will fight for you." Shang Wen said.

"Thank you sir." Lieutenant Nine stood up and raised his hand.

"No thanks. By the way. What's the name of Lieutenant Nine. What is your job?" Shang Wen asked in detail.

"My name is Jiuban Soul." Jiu Lieutenant replied.

"He is the sharpshooter of our regiment. He is very courageous. A person who crosses the front can shoot the other officer." Shang Wen nodded. Expressed recognition of the supplement of the head of the delegation.

"Do you like the barracks?" Shang Wen then asked.

"Of course." Lieutenant Nine replied.

"How about joining the Marine Corps?" Shang Wen continued.

"I mean, this is a brand new service. I guess you have seen it. The probability of a large-scale war breaking out is already very low. The next war will be mainly small-scale wars. Therefore. This brand new service is to deal with this. This kind of situation. They need a reliable fire support. For example, shooting the opponent's commander. Are you interested in joining?" Shang Wen asked.

"This." Lieutenant Nine glanced at his head.

"Sir, I need to think about it." Lieutenant Nine replied.

"All right," Shang Wen replied.