Originally, according to the five-year plan, Owen would let Viru build a thermal power plant and hydropower station to provide power to Bianzhu Town.

Now that we know the new uses of the Lightning Magic Stone, we need to adjust our five-year plan.

Even Winster said that plans can never keep up with changes and the implementation of plans must be flexibly adjusted.

The next day, Owen summoned Gita and Rob urgently.

Owen handed Gita the design drawings of the air extractor and told him to manufacture it as soon as possible.

Making a light bulb requires removing the air inside, otherwise the service life of the light bulb will be very short.

Rob was ordered to use the equipment of the glass factory to manufacture large containers for electrolyte solutions and bulb shells, and the outline design sketches were also given to him.

Then, Owen left the castle and went to meet the dwarf survey team.

After surveying the mountains around Border Guard Town, the dwarves discovered several new veins and deposits, the most important of which was a coal mine deep in the Sky Mountains.

Although it is deep in the mountains, it is quite close to the Weishui River. Owen has arranged for people to mine the coal there and transport it to Bianzhu Town by water transportation using cement steamers.

In addition to known ores, dwarves have also collected many strange and unknown ores for research.

Owen went to find them just to see if there was any tungsten ore in the ore. After all, tungsten is the best material for making filaments.

If not, then we have to settle for the next best thing, first use carbonized bamboo filaments to make light bulbs, and then find tungsten ore and then replace the material.

A dwarf in adventure attire led Owen to a small warehouse and opened the door.

"Lord Aisen, all the ores we found during our survey are here." The dwarf turned to Owen and said, "Please do as you wish."

"Well, thank you."

Entering the warehouse, Owen saw many bamboo baskets neatly arranged. Each basket was marked and contained various ores that he had never seen before.

"I don't know any of these ores."

After glancing around, Angelica frowned slightly, and then asked: "Marquis Essen, do you also have research on ores?"

"Hmph! Of course."

Mapel raised her chin and said proudly: "There is nothing that Mr. Owen doesn't know."

"Uh... I just know a little bit about it," Owen said casually.

He didn't know any minerals at all, and his biggest reliance was actually Alpha.

【Alpha, please.】

【learn.】

Next, Owen looked at the ores in the bamboo basket one by one, sometimes holding them in his hands to touch, pinch and weigh them.

A window will pop up in the center of the field of view, displaying the name of the ore determined by Alpha.

After checking all the way to the last row, Owen still found no tungsten ore.

Is there no tungsten ore?

Looking at the last row of bamboo baskets left, Owen couldn't help but feel a little disappointed. He walked over and picked up the ore in the next bamboo basket.

[Reminder, this is scheelite.]

Owen was so happy to hear Alpha's voice. The Transverse Mountains and the Sky Mountains were indeed treasures of minerals, including tungsten mines.

Immediately afterwards, he carefully observed the scheelite in his hand. It was in the shape of granular stones, white with yellow, and had a fat sheen.

"Where did you find this ore?"

Unable to hide the joy on his face, Owen turned around and asked the dwarf following him.

It was confirmed that scheelite was discovered over the Transverse Mountains. According to the dwarf who found the ore, the quantity seemed to be quite large. Calcite and muscovite were also found there.

There is a tungsten mine, and Owen will send people to mine the ore there later.

This matter does not need to be so urgent. The tungsten used to make the filament can be used first from the basket of scheelite ore that has been mined.

What's more, the air extractor and light bulb housing haven't been manufactured yet, so there's no rush.

However, it is still possible to build a light bulb before winter.

During this period, Bray Gurdjieff led a team of Templar Knights to arrive in the border town by boat, and Owen went to greet him personally.

Bray was amazed when he saw the huge changes in Border Guard Town compared to before.

In addition, the number of demi-humans on the streets has also increased, which made him call Bianzhu Town a model of harmonious coexistence between humans and demi-humans, a scene that the church hopes to see.

After arranging the Templars' residence, Bray went to Viscount Jarvis to discuss how to deal with the undead monsters this winter.

Owen, on the other hand, continued to tinker with power generation equipment and light bulbs.

Compared with last year, the strength of the People's Army has improved tremendously this year. He no longer needs to be too concerned about the undead monsters' invasion of the south. He can just leave it to Viscount Jarvis to deal with it.

The required electrolyte solution is prepared in the chemistry laboratory, and the required amount and concentration are proportioned according to Winster's requirements, as are things such as electrodes and salt bridges.

The wire material is naturally made of copper with very good conductivity, and is wrapped with a layer of rubber as an insulating layer.

After the large glass container of the primary battery was built, Owen installed it in his castle and added electrolyte solution and lightning magic stone into it. Of course, new things must be tested here first.

There is also a wooden box on the outside of the container. You can open it at any time to check the remaining amount of lightning magic stone inside. If it is less, add it in time.

After subsequent tests, the discharge was successful, and the Lord's Castle became the first building in Bianzhu Town to have water, heating, and electricity, although the electrical equipment had not yet been built.

Everything is going according to plan, Owen is also going to refine tungsten wire.

It is understood that the melting point of tungsten is very high, reaching more than 3,400 degrees Celsius.

For an ordinary fire magician to raise the flame temperature to such a high temperature, it would consume a lot of magic power, so Owen had no choice but to do it himself.

As a result, Owen spent most of his magic power alone to successfully refine tungsten wire.

Even he is like this. It seems that the task of refining tungsten wire can only be completed by the partnership of fire magicians and wind magicians who still have sufficient magic power.

After letting out a breath, Owen was about to reach out and wipe his sweat when Mapel stepped forward and took out the handkerchief he had prepared to help wipe away the sweat.

"Thank you." Owen thanked him.

After the bulb shell, air extractor and required parts are manufactured, you can start assembling the light bulb. This step is completed with Gita's help.

After the assembly is completed, use an air extractor to remove the air from the bulb case, and then weld and seal the lower end, and the bulb is produced.

Worried that the air extractor would not clean the air, Irving also ordered Gita to apply a little red phosphorus on the sensor column of the light bulb.

Red phosphorus turns into white phosphorus when heated, and white phosphorus easily reacts with oxygen to form solid phosphorus pentoxide.

In this way, even if there is oxygen remaining in the bulb shell, it can be quickly eliminated.

That night, Owen summoned all the senior officials of the city hall to the castle hall, and Bray also invited them.

Signal the servant to extinguish all lighting sources.

The surroundings suddenly became dark, and many officials felt a little scared and asked what was going on.

"Don't panic, please look here." Owen said.

After saying that, he turned on the circuit switch, and the light bulb in front of him emitted an orange light. It was not like a bonfire or a candle that flickered on and off, but it illuminated the surroundings continuously and steadily.

No need to explain, everyone was staring at the bright light bulb.
Chapter completed!