The weapon tycoon who traveled to Daqin

The speech of Shangwen's last National Love Consultation was quickly printed into newspapers and quickly spread to various places. The emergence of newspapers such as newspapers actually became transparent and openly talked about some transactions. Of course, Shang Wen from the future society understands the role of the media.

Before others, Shang Wen noticed this powerful weapon. Shang Wen must fully play its role. By establishing an image of justice to obtain the support of the people. It occupies a favorable position on the issue of people's hearts.

Shang Wen's proposal requires the opponent's reply to take further action. However, before waiting, Shang Wen has another important thing to do. Popularize a large number of astronomical and geographical knowledge. Especially the map civilization extended between the two.

"This is an astronomical telescope. He seems to be a bit rough. But he can prove that what I see is correct." Shang Wen crowded under the podium with all kinds of people.

There are also representative figures in the ability of the ability. In short, there are all people. Even the Confucian Confucianism in the His Majesty Palace also participated.

In order to popularize this knowledge in this regard, Shang Wen announced early in newspapers to lecture at Qin Guo University. As soon as the news came out, many people came here. Fan Zeng also quietly entered a large ladder that can accommodate 300 people.

Classroom. There are too many people. Many people sit on the stairs to listen to Shangwen to explain.

"This astronomical telescope can see our satellites. The moon. In fact, the moon is a spherical shape. Similarly, the earth where we are. The earth is also a sphere. Like this." Shang Wen said that

The big iron ball. Shang Wen was originally used to demonstrate the cause of lunar eclipse, the cause of the solar eclipse. But it is obviously unable to complete it. Because there are too many people. Shang Wen's doctrine is too advanced. Some people have not realized it yet.

"This question is settled for the time being. If you are interested, you can go to see it when you come at night. I welcomes it very much." Shang Wen made a welcome attitude.

"My theoretical basis is to build this theory. Our earth is a star. And we live on the earth. How can we observe and learn that." Shang Wen said loudly.

"We just use this." Speaking of Shang Wen took out a six -point instrument.

"This is the six -point meter. It is used to determine our latitude. The problem of latitude, I will explain it to you later. But first of all, I want to explain it, why can we use the six -point instrument to determine our latitude?

. ""

"First of all, in our earth, he did not have a certain amount of inclination around the earth. For example, like this. Everyone see." Shang Wen said that he took a big stick and passed through the wooden star. It represents the earth.

"He has a certain amount of inclination. It is because of this inclination that makes the sun's direct point turning back and forth between the north and south rounds." Shang Wen demonstrated while telling.

The horns lead to the difference in the direct point. Some of the fast response, suddenly realized.

"We call him the ecliptic plane and the equatorial surface of the Earth's orbital surface.

It was this angle that appeared. Our spring, summer, autumn and winter. "Shang Wen didn't know how to explain. He was a weapon expert, and a temporary guest had an astronomy, a geographicalist.

Some students of Qin Guo University even picked up the rapid record of pencils. And more people are paying attention to this new knowledge. These knowledge did not have it before.

"We shot the sun directly to the two back weat lines as the North -South Trophy. If you are very interested, I hope everyone can check it out on the spot." Shang Wen said.

"It is precisely the sun to different positions. Therefore, we have spring, summer, autumn and winter, and we have the spring equinox, summer solstice, autumn equinox, and east to." Shang Wen didn't know if there were these spring and autumn equinox at this time, winter and summer solstice.

Regardless of or not, these knowledge must be popular.

"During the Spring and Autumn Period. The direct point of the sun is on the equator. During the winter and summer solstice, he returned to the north and south." Shang Wen said.

"Since we know the date of the direct point of the sun, the angle. Then we can use this to measure the height of the sun, and the angle between the horizontal line." Shang Wen said to write the formula on the blackboard.

The blackboard is all black at the bottom of the pot. Shang Wen himself didn't know that it was all black.

COSZ = sinφSinΔ+COSφCOS commerce

"This is the formula." Shang Wen wrote a few mathematical symbols on the blackboard. The people at the bottom of the people did not understand why Shang Wen drew such a symbol. Is it necessary to drive away evil?

Hours. The big clock behind has sounded.

"We can get the latitude φ in the place by calculating the place in the place where the heavenly body is reduced by 90 degrees of the heavenly top. Δ is the redttire of the celestial bodies, T is the time angle, which can be from local stars and celestial bodies.

It can be obtained when it is reduced, and it can also be obtained through simple calculations. If it is calculated from the solar location to calculate the geographical latitude, the easier algorithm is "Shang Wen said that he picked up the spherical chalk and wrote the Δ = z+Δ.

"Through this, we can calculate the latitude faster." Shang Wen wrote.

"Then let's explain what is latitude." Shang Wen said that he took out a ball to become a ball.

"Just like these iron wires that are sideways. This is our latitude. He circle around the earth. Until the apex." Shang Wen said.

"They follow the east -west direction, the circle around the earth, called the weft. All the weft lines are parallel to each other, vertically with the meridians, and the latitude indicates the east and west directions.

The two latitude coils gradually narrowed, and to the south, the north pole was reduced to points. The meridian and weft lines were drawn on the earth and maps in order to determine the location and direction on the earth.

It is not difficult to see the meridian of your place: standing a bamboo pole on the ground, when the sun is rising at noon, the shadow of the bamboo pole is the meridian of your place. Because the meridian indicates the north and south direction, the meridian is also called

The meridian. The meridian and weft lines are perpendicular to each other. "

"There is not much time. There is still a last time, and I will get out of class right away. I can't drag the hall. The meaning of the latitude and weft is that we can determine our own position without relying on things. Determine your own position accurately. If you use it on the map, then our civilization will step forward a big step. "Shang Wen finished speaking. The bells of the get out of class sounded.

"Oh. Okay. Let's take a get out of class." Shang Wen shrugged.