Release that Witch Chapter 438: “Light”

According to the construction plan, Roland has arranged an equipment room at each well site to house all the equipment required by the three links for easy management.

The complete set includes a steam engine, a motor, a power supply, an boiler and two reservoirs. In addition to the water tower outside the room, the entire three-way system is formed.

Among them, steam engine is responsible for pumping well water into water towers and water storage tanks. The former mainly supplies domestic water for residential use, and the latter is heater water for boiler. The primary storage tank is higher off the ground, with limestone and washing stones suspended in it, which are used to precipitate magnesium and calcium ions in the water and play the role of soft water. The clarified water will be introduced into the lower secondary storage tank, and the floating matter in the water will be stopped by the special filter of Soraya.

The water supply of boiler is completed by the electric motor. When the internal water level is too low, the float valve will be driven to open the motor to send water until the water level returns to normal. This process is much more stable than manual addition or steam engine transportation, and it is also eliminated. The trouble that requires people to stand by at any time.

Because the water supply and heating have been verified in advance, naturally there will be no difficulties in this construction. The key lies in the power supply system, which is the first time for small town. Whether it is Karl or other members of Stonemason, there is definitely no clue about electricity, so Roland intends to make a small model in the courtyard and explain to Ministry of Construction after success. -- After all, he doesn't know much about this aspect, and the basics of circuit knowledge Stay at high school level.

With a reliable and stable power supply, the first step should be to create a qualified electrical device, that is, a light bulb.

Thinking of it, Roland put on a thick coat and set off for the Northern Slope Mountain backyard.

Under the fog of Nightingale, it took a quarter of an hour to reach the destination in only three or four minutes.

Pushing open the wooden door, Anna and Lucia noticed him immediately, but the former only nodded at him because of the busy work, and the latter ran over happily, "Your highness, good morning."

"Good morning," Roland nodded with a smile, then walked to Anna, "What are you doing?"

"New barrel and locking mechanism," she pointedly pointed at several long steel tubes on the table. "Your drawings are a bit unreasonable. I think it would be better to change it like this."

It ’s terrible to me, Roland could n’t help but reached out and tried to touch the other side ’s head, but was rejected by shaking back and forth, alas ... This scene seems to have been seen before. Mood, "Yeah, do what you want."

Roland doesn't mind her questioning her design. The drawing of the gun itself was inferred by him based on the principle. It is normal to have gaps and improvements. However, Anna's own learning talent and understanding ability are far beyond her He felt that one day, her understanding of knowledge would reach a level that she could not reach.

After a while, Anna put down the parts made in his hand, walked to Roland, and lowered his head slightly.

Uh ... Roland can't help but hesitate. Is this to make up for the previous touch?

He tried rubbing her soft hair before Anna lifted his head contentedly, "Do you have something new to try out?"

"Ah ... Yes, "the prince looked towards Lucia," how are you doing with the pile of messy 7-8 ore in the mine? "

"Basically completed, the results are here," the latter handed a stack of books to him, "but the test of mixing with steel may take a long time, because there are too many elemental elements separated. . "

"It's great to be able to do this," Roland encouraged with approval.

This is also an extension of the material improvement plan. Compared with the previous control of carbon content and exclusion of impurities to obtain a high-quality steel ratio, the elements involved now have been expanded to the natural resource that the entire Northern Slope Mining area can provide. There isn't much coincidence in this part, just a little bit to try.

Roland spread out the book, check the characteristics of various unknown minerals in the yard, and quickly found the highest Melting Point element. He pointed to the column labeled Test No. 12, "Where is this ore?"

Lucia then found out the test samples --, which were packed in transparent coated bags, which were a rough stone and a package of elementary particles after decomposition.

And the dark rough stone, Roland feels like I've seen it somewhere.

Wait, isn't it the same as the black stone that was sent to his office before? Since I handed it over to alchemist, I have forgotten it and never paid attention to it.

It turned out to be the highest Melting Point mineral in Northern Slope Mountain?

In the record book, Anna cannot accurately mark the specific value of Melting Point, so it can only be described by language. Between a normal, high and high, only the feature column is written in it Is extremely high.

As for the package of elementary particles, like most metal elements, it appears silvery white, and there is no difference.

Is this stuff tungsten?

Never mind it, as long as it is refractory then it will be alright.

Roland allows Anna to process it into extremely thin wires, twist it into a spiral shape, fix it on a glass frame, and then put the frame into a glass bulb. The main part of the electric lamp is completed.

Of course, if you want to make it shine stably, there are two steps to do -- and this is also the most difficult place in the bulb process: one is to evacuate and isolate the oxygen from reacting with the filament; Air does not enter the bulb.

There is no doubt that these two steps can only be done by witch.

Roland first found Agatha.

Evacuation is mainly because the filament will become extremely active at high temperatures, and it is easy to cause oxidation reactions to generate new oxides. The result is melting. In order to achieve this effect, filling with non-reactive gas is equally effective or even better.

Pure nitrogen is an excellent filler.

Using the principle that nitrogen is lighter than air, a simple downward exhaust method can easily fill the bulb with nitrogen, which is much simpler than evacuation. When the other end is also discharged with nitrogen, Soraya is responsible for sealing, and a simple incandescent lamp is completed.

Looking at the palm-sized electric lamp in my hand, Roland was filled with emotion, such a thing that has been eliminated in later generations, but at this moment represents the highest production level of small town.

The next day In the evening, he summoned all members of City Hall to the forecourt of the castle, and ordered personal guard to extinguish the torches in the courtyard.

During the snowy evening, which covered everything, the Roland closed the circuit switch.

In an instant, the center of the garden was lit with an orange-yellow light. It didn't sway and extinguish in the cold wind like Candlelight, nor did it dim like a bonfire. The lighting range is not large, only a few meters, but the steady light standing against the wind is a sight that people have never seen before.

No explanation is needed at this time.

The blink of an eye and the tranquil scene speak for themselves.

He brought electricity to this world.