You put aside the construction of guns for a while, and go all out to build a cannon for me. Zhao Hao glared at Zhao Shizhen again and said, "Even if it's a bronze cannon, I want the best!" ”

"Uncle, don't worry, this thing is much easier than making a gun." Zhao Shizhen patted his chest and said: "Whether it is the cannon of the Buddha machine man or the two cannons that my uncle gave me, it is not difficult to build." I'm going to prepare for this time, and I'll start a sample cannon after the New Year! ”

"Hmm." Zhao Hao's expression was a little gloomy and said: "I'll go to the Ordnance Bureau again for the New Year and ask you a few artillery masters to come back." ”

"Okay!" Zhao Shizhen naturally smiled.

~~

Zhao Hao spent the morning transferring several research institutes. The big difference he saw was not bad, and he was not far from overcoming the subject he gave, and he couldn't get anything that made his eyes shine for the time being.

What do you mean by that? The future is bright, but the road is tortuous......

This was not surprising to him. If as long as he puts forward a concept, it can become a reality in a blink of an eye, then he simply closed the gate on Xishan Island for decades, saved a pair of planes and tanks, and directly swept the world, claiming the king and hegemony, isn't it beautiful?

It's a pity that it was all a pipe dream. No invention is a tree without roots, and the more new things are that cross the era, the more they need the accumulation of industrial base and scientific research, and they must not be deceived at all.

But there was one thing he had to do now.

After having lunch at the center, Zhao Hao asked Zhang Jian to convene all the formal researchers, and in the conference room of the center, a small meeting was not very formal but had historical significance in the industrial history of the Ming Dynasty.

In his capacity as the director of the research center, he announced that from now on, the center will officially adopt a new set of standard weights and measures!

The researchers, especially those old people, looked at each other when they heard this, and they couldn't understand why this young director was crazy, and he had used a unit of measurement that had been no problem for thousands of years, so why did he have to change it nonsense?

"First of all, we're not trying to abolish the current weights and measures, and we're not qualified to do so." Zhao Hao picked up the teacup and took a sip of Biluochun slowly.

"Hahaha......" The old gentlemen laughed when they heard this, and their resistance was greatly reduced.

"This set of weights and measures handed down by our ancestors is simple and practical, easy to understand, and naturally excellent, but for us who are engaged in science, it is not enough." Zhao Gongzi is used to dealing with scientific researchers, that is, don't easily challenge their common sense.

"Emperor Taizu of this dynasty strictly formulated the standard of weights and measures, but in the two hundred years since the founding of the country, the scale has been very chaotic. For example, Yidou, the official fight and the people's fight are different. There are also differences in the size of the iron bucket used as the standard in each prefecture. Kunshan Yidou is only ninety percent of Taicang's, but it is one point larger than Chongming. When we do scientific research, we must not be ambiguous. The difference is a millimeter, a thousand miles, so it must be accurately determined. ”

"Furthermore, our weights and measures should be easy to calculate, such as one catty is equal to sixteen taels; One mile is equal to one hundred and fifty zhang and one foot and five inches; There are also rulers divided into construction rulers, tailoring rulers, and measuring rulers, and the sizes are slightly different. There are also volume units, stones for grain, and materials for ships...... This is nothing inconvenient in everyday life, but when it comes to scientific calculations, it is a nightmare. ”

"The three are also to protect our scientific research results." Zhao Hao said lightly: "A set of unique measurement standards itself has the effect of secrecy. ”

"Understood." The researchers were convinced.

Of course, even if they are not convinced, it is useless. Because on Xishan Island, Zhao Gongzi's words are the law.

A few disciples carried up a table, and all kinds of measuring instruments were placed on it.

Zhao Hao first patted the clock on the table and said, "Let's talk about the simplest first, the unit of time." There are twelve hours in a day, and the minute hand of the grandfather clock turns for exactly half an hour. We have decreed that an hour shall be a great hour, and half an hour shall be an hour. And set an hour as sixty minutes, and each minute as sixty seconds. In the future, all records in the center must be accurate to the second. ”

"Uh-huh." The researchers nodded their heads one after another, which was indeed very convenient, and it was much more accurate than a cup of tea and a meal in a moment.

He glanced at Zhang Jian again and said in a deep voice: "The best Taixi clock at the moment also has an error of two to three minutes a day. Your 04 Institute must step up its efforts to thoroughly understand the watchmaking technology and strive to reduce the error as soon as possible. In addition, you should record the celestial phenomena according to your senior brother Bei, and adjust the meter every day. ”

Qin Tianjian recorded the sun, moon and stars, and the time of sunrise and sunset every day, which was naturally remembered extremely accurately, and could be used as a reference system.

"Yes, Master." Zhang Jian nodded, he has put a lot of energy into the manufacture of measuring instruments in the past few months.

"I stipulate that the angle at which the minute hand is turned in one turn, that is, a circle is divided into 360 degrees." Zhao Hao picked up a protractor again and said: "Because it is easily divisible, many special angles are integers, such as the circumferential angle is 180 degrees, the right angle is 90 degrees, and each angle of an equilateral triangle is 60 degrees...... In addition, one degree is equal to 60 minutes, and one minute is equal to 60 seconds. ”

"Let's talk about length units." Zhao Hao picked up a brass ruler and said: "I stipulate that one fifty-hundredth of a mile is one meter, and one meter in the center is subject to the length of this ruler, referred to as meters." ”

In fact, he originally planned not to be called 'Mi', but a mysterious force from the East stopped him. I always feel that this will be convenient for some distinguished people......

"It is also stipulated that 1,000 meters is one kilometer." Zhao Gongzi shook his head, shook off the strange thought, and continued: "One-tenth of a meter is a decimeter, and one-tenth of a decimeter is one centimeter; A tenth of a centimeter is a millimeter, and the millimeter is the smallest unit on the ruler, but it is far from the smallest unit. ”

As he spoke, he picked up a vernier caliper and said, "It can be accurate to one-tenth of a millimeter, which can be called silk rice." I hope you can use this unit as soon as possible. ”

There was a burst of laughter in the conference room, and they didn't even need a millimeter.

From this, the unit of area can be derived. I stipulate that the side length is a square of one kilometer, and the area is one square kilometer; The side length is a square of one meter, and the area is one square meter......"

and derive the volume unit. The edge length is a cube of one meter, and the volume is one cubic meter......"

"And then there's the unit of temperature." Zhao Hao said, carefully picked up a long glass pillar and said, "I stipulate that the temperature of water boiling on Xishan Island is 100 degrees. The temperature of the ice-water mixture is zero degrees. Using this glass tube filled with mercury as a thermometer, the two temperatures were marked on the glass column and divided into 100 equal parts, each equal part is 1 degree...... To distinguish it from angles, we can call it ......"

"Zhao Shidu." Zhang Jian answered softly.

"Whatever." Zhao Gongzi faked a smile, causing everyone to laugh.

"So the current temperature is ......" Zhao Hao looked at the scale on the thermometer and said, "4 degrees." ”

"Wow, this is a good ......," many craftsmen couldn't help but excitedly say, "Now you can know the temperature of the furnace." ”

"This can't be done yet." Zhao Gongzi couldn't help but smile bitterly: "The boiling point of mercury is only more than 300 degrees, and this thermometer can only measure 200 degrees." I hope that this wish will be fulfilled in the future. ”

"Finally, there is the unit of weight, and I stipulate that on Xishan Island, at today's temperature, 1 cubic decimeter of pure water weighs 1 kilogram." 1 cubic meter of pure water weighs one ton. One cubic centimeter of pure water weighs one gram ......"

"That's all for now." He weighed the kilogram of sterling silver weight in his hand and said:

"All units of measurement shall be effective from now on, and all data of the center shall be converted before the year of the year. Starting next year, all written text will be presented in scientific metrology! ”

"Yes!" The crowd responded in unison.

Ps. The current weights and measures are the result of everyone's previous votes......