I am the cook, but I am Li Er's son-in-law

No one stopped.

The factory started up smoothly. It stands to reason that it should be opened in Wu County, at least close to Wu County, but those workshops were opened fifty or sixty miles away from Wu County.

But apart from eating, the workshop also takes care of living.

The residence is a four-person room, which is a bit restrictive, but the environment is not bad, and the cement floor is better than most people's homes.

Men have male dorms.

Women also have women's dorms.

If you want to work in the workshop, you either have to live in the workshop, or you have to get up early and stay late, leaving home before dawn.

Those who have fields at home are still hesitating whether to give up their fields.

But those long-term workers, short-term workers, and farmers who rented the land of the family, they simply gave up and went straight to the workshop.

Anyway, Renzi is just food.

Instead of consuming food at home and only earning back the next year's food in the end, it is better to go to the factory, where food and housing are in charge, and there is no expenditure at all.

Let the land grow barren, and most of the food did not fall into his pocket anyway.

Before the autumn harvest, the aristocratic family hadn't realized what the exodus meant.

Paper mills and textile mills got busy.

Chang'an City, Tongfu restaurant.

In the backyard, several little girls yelled happily, the voice was so loud that the guests who were eating in the front hall were shocked.

Li Lizhi opened the curtain and poked her head out: "Husband, we did it."

Yin Xuan was taken aback, stood up, and walked back.

As soon as he stepped into the backyard, a buzzing sound rang in his ears, an iron machine vibrated slightly, and black smoke from the charcoal fire shot up into the sky.

"Successful?" Yin Xuan looked at the machine, a little surprised.

Li Lizhi nodded.

Although Yin Xuan pointed out a direction for the research on generators, it didn't go so smoothly. They built a generator on the fifth day after Yin Xuan assigned them homework.

then……

Blasted.

Literally an explosion.Then I tried some other methods, and finally I was able to prevent the machine from exploding. When I tried to use pure copper wires to lead the current, the copper wires exploded again.

It failed in one breath for a month.

Reminded by Yin Xuan, they decided to get the tools out before making this thing.

Electromagnetic instruments, ammeters and voltmeters are not difficult to manufacture, and without other things, fruit batteries can be used to test instruments.

With the tools, it is much easier to make a generator, and it is easy to see how much the transformer has played.

At least it can output current stably and continuously.

Yin Xuan took out the light bulb that had been made earlier in the morning from the house, and it was made of tungsten wire. Seeing this, Yin Xuan couldn't help feeling a little bit embarrassed.

Tungsten is a very rare metal that rarely exists in nature in the form of minerals, and its value is about the same as that of rare earths.After all, it is the metal with the highest melting point in nature, and its hardness is only slightly weaker than diamond.

of course……

Now, a car of glass can be exchanged for a car of wolframite or scheelite.

Plug into the socket and connect to power on.

A dazzling yellow light radiated out.

"It's really...it's on." Li Lizhi widened her eyes, squatted down, and put her hand on the light bulb. She felt a burning sensation from her fingertips, and she couldn't help but exclaimed.

"And the heat."

Li Shu also squatted down and tilted her head to observe: "Then you don't need to light candles and oil lamps at night?"

This light looks much brighter than candles, oil lamps and so on.

"Well, let's make do with it tonight." Yin Xuan nodded, "Let's see if there will be any accidents."

Fang Yiyu raised his head: "Brother Zhengyang is not satisfied with this light?"

Yin Xuan hesitated for a moment, nodded and said, "It's a little bit, the light is too dim."

"Can it be brighter again?" Li Shu tilted her head and turned back, asking with surprise in her eyes.They were very satisfied with the light, at least eight degrees brighter than oil lamps and candles.

Yin Xuan stood up slowly: "The fundamental reason is that the temperature of the tungsten wire is not enough. The higher the temperature, the brighter its light."

"But how to solve it is up to you."

Although Yin Xuan has some knowledge about light bulbs, what he knows is only limited to popular science.

For example, when he was a child, he was very curious, why the light bulb emits yellow light, but it is called "incandescent lamp". With this name, shouldn't it emit white light?

Later, when I learned physics in junior high school, incandescence turned out to be a physical phenomenon.

When certain objects are in a high temperature state, they will become light by themselves.

The size and intensity of light are related to temperature. The higher the temperature, the stronger the light, and it will gradually change from red to blue.

However, most objects have melting points, such as iron and copper, which have low melting points, so they are not very suitable materials for filaments.

Experience is a great thing.

It took a total of 100 years from the birth of the light bulb to the appearance of the tungsten lamp.If there is no ready-made result, it will take one generation after another to study and explore, and it will take 100 years to discover it.

But with experience.

Yin Xuan only needs to let the craftsman pull out the tungsten wire. Datang does not lack such technical ability-it is just that this high-precision technology cannot be used on a large scale.

The wires are covered with a layer of rubber, and are connected from the backyard to the entrance of the restaurant.

The guests were a little puzzled, not knowing what the reason for pulling this thread was.

I also saw that I hung several glass bottles on the thread with my own hands. There were also on the doorway outside the restaurant, and on the ceiling of the lobby in the restaurant.This made them very puzzled, could this be some new transfer ceremony?
until night.

The dinner guests were full, and some people frowned: "Shop, it's getting dark now, why don't you hang up lanterns, isn't the barbecue closed tonight?"

"Open, open!" Yin Xuan waved his hand, "I just finished cooking dinner for you, so let me take a break at this time."

"By the way, I'll show you something nice."

After two slaps, Yin Xuan clapped his hands.

The generator in the backyard was working.

It's just that the coal has just been burned, and it takes a certain amount of reaction time.

The diners stared at Yin Xuan vaguely in the dimness, closed their mouths, and waited for a while, but there was no movement.

After waiting for a while, someone couldn't hold back his temper: "Shopkeeper, what exactly are you going to show us..."

His doubts are not over yet.

Brush it.

Here comes the light.

Bright, warm yellowish light cascaded down from his head and fell on them, illuminating their world.

The first ray of light in Datang, brightened.