Although the desire for telegraphs was enormous, Dr. Chung was right to point out that the leapfrog development of the Crossing Group in machinery and chemical industry was not enough to support the development of electricity. There is a long way to go in the development of electricity.

Today, the Group has established a system of electrical applications that go far beyond time and space, including simple power generation/transmission and distribution networks, radios, semi-automatic/manual telephone exchanges, and mobile phone systems. But all this is built on equipment from the 21st century.

Compared to the machinery industry, which is already capable of manufacturing a variety of simple machine tools, standard parts, and bearings, the electrical industry of the Crossing Group is a blank one. Not to mention the simplest equipment, even the mass production wires have only recently been reluctantly developed. Lacquer and tung oil are used as the basic raw materials for the insulating material, which is now barely used on telephone lines. Chung thinks that the use of wired telegraphs will not be too much of a problem. It was the cable telegraph that he chose to develop.

Weishenme to build a cable telegraph first? Dr. Chung explained it this way: First of all, the cable telegraph is the easiest of all communication equipment to be manufactured using the local method. Simple wired electrical equipmentMany people have seen it on "The Mysterious Island". Dr. Chung thinks that the manufacturing process on Mystic Island is too sketchy, but the basic idea is correct. With his ability and mastery of equipment, he should be able to make more haode equipment. The telephone of the manual exchange station seems to be simple, but the telephone manufacturing itself has to overcome some jishu problems. The second is that the wired telegraph has a low bit error rate and can be transmitted. Although the radio environment in this plane is very clean, there is always interference from various weather factors. In fact, most commercial, civilian, and military telegraphs in the past were sent using cable telegraph networks.

If Dr. Zhong is a person who travels through, then it will be very difficult for him to do this work - he has to rebuild a whole set of local chemical industry, and he has to rely on the primitive but at least existing metal smelting industry to make a cable telegraph, and the manufacture of electrical instruments is an extremely difficult thing, but now he has all kinds of test instruments and equipment brought from another time and space, and there is a fairly modern industrial system, it will not be too difficult to make a cable telegraph.

First of all, he had to get the power supply. The power supply system of the crossing group was alternating current, which obviously did not meet the requirements of the primary telegraph, so the power supply problem had to be taken care of. Originally, this was not a big problem, whether it was a hand-cranked generator or a lead-acid battery, the Planning Commission's warehouse had a lot of stock, but Dr. Chung decided to completely base himself on the industrial base of the group and develop his own power supply -- the stock of the 21st century will run out one day.

battery, he decided to use the Daniel battery, which is the least difficult on the jishu. This battery is made up of a copper drum and a perforated slot inside it. The copper drum is the positive electrode, while a zinc rod in the porous groove is the negative electrode, and the dilute sulfuric acid is injected into the porous groove, and the outside is saturated copper sulfate solution.

This battery was quite successful in design, it did not have the acid mist problem that was common with earlier batteries, it could operate for a long time unattended, and the voltage output was stable. In addition, the plates of this type of battery will not be corroded and can be used for a long time.

The Daniel battery was the main source of power for telegraphs until 1875. Although its output voltage is only 2 volts, a 10-slot battery is enough to supply a telegraph with stable operation for a long time. The biggest disadvantage is that it cannot be charged, and it must be re-added after the discharge is completed, which is very polluting to the environment and the health of the operator will also be affected. However, this type of battery is very useful compared to a voltaic battery that can only be used as a shiyan room toy.

The raw materials of Daniel's batteries are all provided by the industry, and the zinc is the lead of this time and space, and the group imported a large number of large quantities of low-purity lead from Guangdong, and re-smelted and purified it - the Industrial Energy Commission was originally intended to be used to make white iron sheets.

Soon after Dr. Chung drew the blueprints, the machine shop produced a prototype in which the outer groove of the battery was made of glass. The corrosion resistance and leak-proof effect of glass is better than that of ordinary materials, and the disadvantage is that it is fragile. Fortunately, the average cable telegraph does not move around.

After the finished product came out, Zhong Lishi made a short-circuit spark discharge shiyan to verify that the battery was working. He took out two rubber copper wires from the two electrodes of the battery, then put on anti-electric shock protection gloves, and then slowly approached and touched the two copper wires. A very small electric spark that is difficult to discern with the naked eye flashed at the moment when the two copper wires met, and this spark was so small that it was difficult to spot if you looked closely.

He then measured the battery with a multimeter, and the output voltage stabilized at 2 volts – the Daniel battery was a complete success. Dr. Chung immediately named the battery "Chung's No. 1 Battery", and the reason why it was called No. 1 was because he planned to continue stealing the work of future generations, such as rechargeable lead-acid batteries.

There is still some room for improvement in the Chung's No. 1 battery. He then used the information from the Jishu data to process and manufacture a zinc sulfate solution to replace the dilute sulfuric acid in the battery, which is said to extend the life of the zinc rod in the battery. He asked the machine shop to make a prototype and prepare two batteries to be used at the same time to see if this statement worked.

After Dr. Zhong concentrated on the research of batteries and wired electricity, Lingao had to continue to use the traditional way of sounding the whistle. In the past, the timekeeping work was not paid attention to by the group, and simply followed the Beijing time brought from another time and space.

Before the crossing, except for a few places for special purposes, the timers had replaced their timers with mechanical ones, and also carried a large number of mechanical watches as reserves. All public and private timers use the Beijing time, which is calibrated with the Greenwich Mean Time displayed by the marine clock on the Fengcheng ship.

In order to make a public time signal to the natives and travelers, the whistle is sounded four times a day at 6 o'clock, 12 o'clock, 18 o'clock, and 24 o'clock at the thermal power stations in Bairencheng and Bopu. Bairencheng and Bopu Port are signaled by Lingao Cable Radio Station at a fixed point every hour.

They now realize that this time system is no longer necessary, firstly because Lingao and Beijing are not in the same time zone, and secondly, on the political map of the future crossing group, the city of Beijing, which is located in the north, has a poor natural environment, and does not enjoy any special status - some extremists have already proposed that the great cause of crossing China be renamed "Youzhou" once it succeeds.

After several discussions on this issue, the research team led by Wang Luobin concluded that they could use the local time, which is the time in the East 7th District, in Lingao.

"Honestly, I don't see any practical significance for us to switch from East 8th to East 7th. In addition to satisfying some people's inexplicable hobbies. Ma Qianzhuo did not understand the change made by this kind of psychological factor that is greater than the actual significance.

"It's not a bad thing anyway." "At least the timekeeping should be more precise, after all, it's an hour away -- and some people want to use the high time instead of GMT," Wang said. ”

"Don't, you'll be. This change,A lot of jishu information doesn't have to be modified.,It's too troublesome.。 Wen Deji was not interested in this proposal either.

Wang Luobin also didn't want to change the GMT time, now the most accurate time in their hands is the GMT on the navigation clock on the Fengcheng ship, if they change it to Lingao time, I'm afraid it won't be as accurate as this original time.

"We're going to set up an observatory in Lingao." Wang Luobin said.

The significance of the observatory is certainly not to observe Halley's Comet or to see where there are signs of extraterrestrial life, but the basic purpose of this observatory through the group is the same as that of the ancients, mainly to serve the precise calendar and time.

"Not only the observatory, but also the meteorological observatory." "Weather forecasting is very important to us. It is necessary not only to have a meteorological observatory, but also to establish a network for meteorological monitoring. ”

"And the hydrological station." Wen Desi remembered that Yan Que Zhi had mentioned to him that in order to collect hydrological data on the main rivers of Lingao, it was necessary to establish a basin-wide observatory in the Wenlan River Basin.

"Well, it's a systematic long-term plan." Wen Deji spread out the large-scale map of the heights, "The observatory can be located in the high mountain range. ”

"Isn't this place going to be used for animal husbandry?"

"In addition to animal husbandry, observatories and weather stations can also be passed. I propose that the Alpine area be the focus of our next phase of construction. "Relocating our scientific research institutions and databases to the mountainous area -- for security and security, and once the enemy attacks, the city is likely to become a battlefield -- it is difficult for us to defend in all aspects." ”

Another problem is the typhoon Lingao. So far, the crossing group has not tried the taste of a typhoon. According to the warnings of several amateur meteorologists, the late summer and early autumn are the peak period for Lingao to be hit by typhoons -- although Lingao is an area along the coast of Hainan Island that has suffered relatively few typhoons, the power of typhoons should not be underestimated. Every time it causes flooding. The main base of the crossing group is either in the port or by the river. Vulnerable to disasters. The damage caused by wind damage in the high mountain range area is much smaller, and it is not easy to cause floods, as for the mudslide, the people in the big library have searched all the materials, and they have not found such a record in the high mountain range. Overall, a safe place.

The high mountains have abundant water sources, a good natural environment, and milder temperatures than the Wenlan River Basin. The geological conditions were also very stable - in the era of deep digging and accumulating grain, the local garrison dug large war-ready caves here, and Gaoshan Ridge had a certain feasibility as a strategic reserve base for crossing the group. (

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