On the end of the world, according to the calculation of the film, it has bypassed most of the planet. Because of the stamping ability of the storage soul guide, it can produce almost perfect gears and clocks, so that the accuracy of the navigation clock can finally be used to measure longitude.


    They are now not far from the east coast of Douluo continent. At that time, as long as they go south, bypass the Xingluo Empire and follow the coastline, they can return to Doujiang and complete their first round the world voyage.


    It is reasonable to say that there should be a continent, which was mentioned in Douluo''s third book, but it was not encountered on the route of the film, perhaps because it was in the southern hemisphere.


    However, from the description in the original book, we can''t see this, which is normal. After all, most novels, who has nothing to do, go to the southern hemisphere! Anyway, I haven''t read any novels about the sun rising in the East and setting in the west, but it''s not in the south at noon


    The end of the world is also improving along the way. The combination of soul guidance technology and mechanical technology makes the studio always in the state of technology explosion.


    When we return to the mainland, with the perfect processing accuracy of the storage soul guide stamping, we can process a perfect sealed reaction tank. Theoretically, the front technology of synthetic ammonia can be used to build high-pressure sealing equipment for submarines.


    This is a very important subject in the chemical industry. If we can''t find a way to convert nitrogen in the air into ammonia or nitrate, the acquisition of nitrogen is always a big problem. At least we can''t get nitrogen fertilizer in agriculture. The nitrate used for gunpowder can only be scraped by toilets, even if it scrapes the nitrate from all toilets on Douluo continent, That won''t last long!


    Even if he now uses high explosives, neither nitroglycerin nor trinitrotoluene can be separated from nitrogen. Relying on plant nitrogen fixation, he wants to make great development of the chemical industry.


    In addition to a series of chemical industries such as synthetic ammonia, alkali making, sulfuric acid making and so on, the studio is also preparing to set up several fractionation towers. Before refining kerosene from oil, it is really a small fight. Gasoline, diesel, lubricating oil, asphalt and all kinds of industrial blood are always refined from here.


    The internal combustion engine is no longer a problem. The basic structure of this thing is found in junior high school physics books. It is much more detailed than the structural diagram of the steam engine. Not to mention the normal four stroke cylinder engine, even the rotor engine can be designed.


    As long as industrial blood can be supplied, gasoline engine and diesel engine can be launched immediately. History has proved that steam engine will be eliminated sooner or later. Although Steampunk is romantic, it will not adapt to the times and will be abandoned by the times.


    At present, steam engines, even steam locomotives, steam spinning wheels, and even steam engineering machinery are just excessive products before the maturity of petrochemical technology.


    If you want to use steam power again in the future, you have to wait until the nuclear reactor comes out. That sentence is indeed true. Human development comes and goes, and finally you have to boil water.


    During the upcoming return to the mainland, the studio also lit up some technology trees that have no bottleneck at all, so that this return can be more shocking.


    The so-called technology tree without bottleneck is actually electric energy. In fact, even in the primitive era, it can be done to make electric stacks and hand-operated generators. In fact, electric energy has no bottleneck at all, but in history, the application of this energy happened to be discovered later.


    Now that conditions are available, although it is not possible to popularize electricity to the mainland for the time being, mainly because there is not so much copper on hand, it is more than enough to supply power to the world''s end.


    In fact, the generator is not difficult. It is nothing more than wire cutting magnetic induction wire. Winding with coil, it is easy to create an alternator. Driven by the steam engine, it can easily supply power to the whole ship.


    With electricity, we should naturally use electrical appliances. Naturally, the first thought must be electric lights. It''s too much to say mobile phones!


    As we all know, tungsten is the most suitable material for incandescent lamps. This kind of ore is not very small, but because we don''t know how to smelt it, no one has refined this metal before filming.


    In fact, it''s not very difficult to refine. When you encounter uncertain metal oxides, you must use hydrogen. If hydrogen is uncertain, it''s basically difficult to have simple substances in nature.


    Because hydrogen can''t handle metal elements, they basically react with water, such as metal sodium, and the planet is full of water


    In short, the difficulty of electric lights is not great. Glass seems expensive in this era, but for those who master technology, it is just a commodity that can be mass produced. Breaking a large piece half a person''s height will not hurt.


    As a result, the lights on the end of the world soon became bright. Compared with the dim candle light or oil lamp, the incandescent lamp was undoubtedly much brighter. The photography was like a nouveau riche, filling the ship with light bulbs. At night, it was as bright as during the day, which was simply the light pollution moving on the sea.


    At that time, many sea soul beasts rushed up to add food to everyone. Many soul beasts have phototaxis. That''s good. When the light is turned on at night, even the bait is saved.


    Although this arrangement is extremely vulgar, it has to be said that the light is indeed a symbol of civilization, just like the earth in the previous life. When viewed from space at night, the more prosperous the place is, the brighter the light will be.


    The moving light pollution is indeed extremely shocking. Even the crew themselves can''t help but have an inexplicable sense of pride, because nothing can be brighter than them at night.


    In fact, it is unscientific to turn on the lights so brightly at night. On the one hand, it will affect the lighthouse observing the coast, and on the other hand, it also increases the possibility of getting lost at night.


    Fortunately, there is a background to provide mental scanning. You don''t need to worry about the danger of hitting the reef. You just need to move towards the target as much as possible.


    The photographer leaned against the back chair in the cab and looked at the lights that went on and off because of the unstable voltage. His eyes were full of memories.


    Why is he dedicated to climbing the tree of science and technology and building a civilization different from this era? Except for self-protection, is it not the remembrance of the previous life?


    If you really can''t go back, try every means to make it more like your hometown.


    Chengying can''t do the same as many of his predecessors. When he comes to a different world, he will forget all about his previous life and concentrate on improving his strength. Maybe this is the softness hidden in the depths of his character! But who knows how he can make a decision when this sustenance is violated?


    The distant coastline has gradually reached the end, and the familiar continent is close at hand


    [to be continued]


    Collection and recommendation ticket ~