The weapon tycoon who traveled to Daqin

The best sensitive material is silver bromide. Preparation of silver bromide. Sodium bromide is common than a multi -multi -bromide. Sodium bromide and silver nitrate reactions are made of silver.

However, Shang Wen covered with a large blanket. Then holding a red paper to make a lamp cover on the kerosene lamp. Because of the coal oil lamp, Shang Wen had to come out to breathe. Or use a bracket to set up.

There are silver bromide. The photographic glue is reluctant. Because the gelatin needs fresh beef bones to be done after ninety to a hundred days. But things can only be barely used at this step.

Next is to make a camera. Make a portable wooden box camera according to the soil method. Shang Wen needs to make two. One scene and one photo. The shutter also uses a mechanical shutter.

According to Shangwen's immediately. The camera must also have a focal length. In order to measure, Shangwen spent some thoughts. With the help of the triangle measurement method. Based on the distance from the two known points, the distance of the third point was calculated.

Learning, architecture. Based on this, some people have started to have geometric studies. Many people are studying. Because the noodles involved are very wide. Shang Wen does so.

The cameras have this ranging device.

In addition, there is a rotating reflector. The camera is made of two wooden boxes as a whole. This can adjust the focal length.

Shang Wen did a double -lens reflective camera. This suddenly spans the history of the camera several times. However, Shang Wen is still satisfied. There are also flash. The early flashing lights were magnesium.

Then electrolytic magnesium.

Magnesium's laboratory in Qin State has been recognized. It is mainly obtained through electrolysis of lime. Point -solving method also produces lively metals such as sodium, potassium.

. According to a panking of a limited knowledge, continuous research and development experiments.

The use of electrolytic method also found a kind of poisonous gas. Chlorine gas. At the same time, it also obtained another kind of acid hydrochloric acid. This is made by electrolyte salt water. As for the effect, laboratory staff are still studying.

Chemistry has been recognized by more and more people. Some arsenal has begun to link chemistry and weapon manufacturing. It is mainly used as a gun launching medicine. But the progress is very slow.

However, because the fiber materials used are catkins. Chancin is the best fiber material found in Qin Guo. Many places are using it. For example, papermaking. Catal money requires a large number of catkins to make high -end paper.

The price of catkins. Use catkins to make fire -free fuel -free pills. It looks a bit extravagant. For this reason, Qin Guo has missed the launch medicine. Instead, they study other alternative launch medicines. Because of the relationship of fire -free, it is related to the relationship.

Machine guns. The development of the types of bullets is slow.

However, if there is a loss, there must be. The R & D personnel invented another type of launching medicine. The bitterness is sour. However, he is mainly used on the shells. This has made Qin Guo start large -scale progress in the artillery process. Some people start production according to the high pressure cooker.

The artillery bag is also filled with metal medicine barrels. The appearance of the detonator. Let an expensive single -based medicine shells appear. However, there is a problem with the cannon tube. Because the artillery still uses bronze or copper as the launch tube. Steel.

The demand has been raised again. People have reached a point where the steel has reached an urgent need.

Steel needs to be forged repeatedly to come out. This allows some people to start looking for new methods to manufacture steel. However, this time, chemistry is chemical. Because chemistry needs to use a series of chemicals to calculate its ingredients. And make a foundation for mining minerals.

Shang Wen's camera has done almost the same. The rest is the photo paper. Look at the time that it has been five o'clock. Shang Wen decided to rest. But Yu Yu couldn't sleep excitedly. Because of sunglasses. Many sunglasses. She wants to try. She wants to try.

Try.

With this idea. She couldn't sleep on the left. I couldn't sleep right.

"Why is it not bright yet. My sunglasses!" Yu Yu took the sunglasses and worn it.

"No. I have to get up." Said Yuyu rolled over. The maids she tossed had to be busy. Yu Yu was so excited. She kept urging and hurry up.

When it was almost finished, then put on a pair of brown large toad mirror early and walked out.

As soon as I went out, I saw that the servant's attendant was startled.

"Ah" The guy in the handle of many servants turned to the ground.

"What is it? I haven't seen this princess wearing sunglasses? Huh!" Yu Yu planned to appear in a new attitude. I didn't expect someone to understand.

King Qin got up early, Zhao Gao followed the Queen Qin after serving the Queen of Qin. He had very few documents approved by King Qin himself. Therefore, the more free time for King Qin.

"Zhao Gao, is it here today's newspaper?" King Qin asked.

"Small, take it." Zhao Gao bent his waist respectfully and was about to leave. When he was about to turn, Yuyu suddenly appeared in sunglasses.

Zhao Gao, who has never seen such a dress, was scared to the ground.

"This ..." Zhao Gao didn't speak in his mouth.

"Hey. A startled! This is sunglasses!" Said Yu Yu.

"Get up!" Say Yu said.

"What are you doing with a mask?" King Qin was attracted by Zhao Gao's voice and asked.

"Father! This is not a mask. This is sunglasses. This is the sun." Said that Yu Yu stepped forward and passed the sunglasses and handed it to King Qin.

"Oh! Is Mr. Qin doing it for you?" King Qin asked.

Yu Yu nodded and agreed.

King Qin said, put on sunglasses and looked at it.

"Hey! Why isn't it dark that day? Isn't it invisible to put on this day?" King Qin asked strangely.

"This requires the sun to use it. After the sun comes out, there is no need to be dazzling." Yu Yu explained.

"Well." King Qin wanted to try it. But the sun has not risen in the morning. The use of sunglasses is not great.

"Talk about it, what else has Mr. Qin invented?" King Qin took off the sunglasses and asked.

"Father, how do you know that there are still new things invented?" Yu Yu asked.

"Look at you!" King Qin replied.

"Look at me." Yu Yu puzzled.

"Come so early, there must be other things. Say!" King Qin said.

"Well." Yu Yu still puzzled. But the father and king had to answer first.

"What kind of telegram is he studying. He can pass the news all at once. There is also a camera. It is something that can draw his father at once." Yu Yu answered solidly.

"Oh! That widow is going to see." King Qin said.

"Zhao Gao, prepare a car!" King Qin yelled.