Chen Shanhe stopped and looked at him questioningly.

Jiang Shiyue: “…”

He had already bitten it, so it was too late to say anything now. If he did, both of them would be embarrassed. They shook their heads and said, "It's okay."

It's just that my cheeks were getting a little hot uncontrollably.

Jiang Shiyue thought of a word.

Indirect kiss.

**

After dinner, the exhausted Xiao Yangyang slept in the tent. Jiang Shiyue dragged Chen Shanhe to see the results of her work during the day.

You don't even need to be there to know the experiment has failed.

The LED lights did not illuminate the surroundings as Jiang Shiyue had imagined.

It was still pitch black.

Jiang Shiyue circled the tilted electric pole twice, frowning and muttering, "Why isn't the light on?"

After half a day of sunshine and the addition of the small windmill, the stored electricity should be able to provide lighting for several hours even at a discount.

Chen Shanhe handed the lantern to Jiang Shiyue, jumped from his position, and climbed up the electric pole using his hands and feet.

The area they were rescuing was severely affected. They had been rescuing people since the earthquake began, and the batteries for their flashlights had been used up yesterday.

Fortunately, a batch of candles were found in a collapsed supply and marketing cooperative and could be used for lighting.

It was windy outside, so everyone used cellophane and wooden boards to cover the lit candles, turning them into simple lanterns.

Not as bright as a flashlight, but better than no light.

Jiang Shiyue tried hard to hold up the lantern to illuminate Chen Shanhe.

"Does anyone have a working flashlight? Or batteries would be fine."

An anxious voice came through the old loudspeaker.

Jiang Shiyue turned his head.

Actually, you can't see anything.

The candlelight among the broken walls is like fireflies, which can be seen brightly, but the range of light is limited.

"If anyone has a working flashlight, please bring it to the operating tent. We need it urgently!"

"I repeat, anyone with a flashlight or flashlight bucket that uses batteries please bring it to the surgical tent."

Jiang Shiyue looked up subconsciously.

Chen Shanhe happened to lower his head, and the two of them looked at each other in the dim candlelight.

Chen Shanhe said, "If you have this..." He pointed to an LED light he had never seen before and asked Jiang Shiyue, "If the light is on, can it be as bright as an operating light?"

Jiang Shiyue shook her head. "It's different. The surgical lamp must not only be bright but also shadowless. This LED lamp will cast a shadow, I don't know if it can be used. And..."

Jiang Shiyue sighed softly, "I'm just an outsider after all. I haven't figured it out yet. The experiment failed because the light didn't light up."

The loudspeaker was still shouting, proving that the situation was indeed urgent.

However, conditions in all aspects were limited in 1978, and it was another epic disaster.

From the first second Jiang Shiyue arrived here, every second will be filled with regrets.

Often, a second late can result in the loss of a life.

Jiang Shiyue got these materials in order to go back to her hometown with Chen Shanhe to kill time and solve the electricity problem, but who would have thought that they were interrupted by an earthquake.

She remembered that in her previous life she made a two-kilowatt solar panel, which could collect ten kilowatt-hours of electricity a day when the sun was good.

But that's thanks to the advanced battery technology.

A battery is a device that can convert chemical energy into electrical energy and also convert electrical energy into chemical energy.

In Jiang Shiyue's previous life, there were already many types of batteries used for energy storage, the most common ones were lithium iron phosphate batteries, polymer lithium batteries, ternary ion batteries, and the ancestor of batteries, lead-acid batteries.

It is now 1978. Due to the limitations of technological development, the battery material Lu Zheng prepared for Jiang Shiyue is for lead-acid batteries.

The standard voltage of a single-cell lead-acid battery is two volts. It can charge 2.4 volts and discharge 1.5 volts.

Twelve volts of electricity is made by connecting six single-cell lead-acid batteries in series. Similarly, there are twenty-four volts, thirty-six volts, and so on.

Lead-acid batteries are not expensive, and Lu Zheng was probably afraid that Jiang Shiyue would fail, so he gave her enough materials for sixty single-cell batteries.

Jiang Shiyue used the materials of eighteen single-cell batteries today, which is only thirty-six volts of electricity.

The solar panel uses one square meter of monocrystalline silicon, which is about 120 watts. It only generated electricity normally for six hours today, and collected a total of 0.72 kWh of electricity.

Less than one kilowatt-hour of electricity.

In addition to the solar panels, there is also a small wind turbine. It is a bit of a stretch to call it small and it can be considered micro.

The wind turbine made by Jiang Shiyue has a relatively small capacity, only about 100 watts.

Unlike solar power generation, wind turbines are also affected by wind speed.

According to today's wind speed, at least 0.2 kWh of electricity will be consumed in an hour.

Together, they are enough to provide light for the entire night.

The prerequisite is that Jiang Shiyue’s DIY solar energy, wind turbines, and LED lights can operate normally.

Now, obviously not.

Jiang Shiyue looked up at Chen Shanhe who was busy at the top of the electric pole.

Whether we can have lighting tonight depends on whether Chen Shanhe can fix it.

Chen Shanhe fiddled with it for a while, slid down the electric pole, fiddled with the battery for a while, stood up, clapped his hands, and said, "It's done."

As soon as he finished speaking, the LED light on the top lit up.

In 1978, tungsten filament bulbs were still the main light source. Jiang Shiyue's eyes felt uncomfortable with the sudden bright white light. She raised her hand to cover her eyes with a look of surprise. "How did you fix it? You know about electricity generation too?"

Chen Shanhe shook his head, his expression somewhat complicated. "I don't understand electricity generation, but I know a little bit about circuits. You have a wire from the light bulb to this..."

He pointed at the battery and said, "The wires to the big box are connected backwards."

Jiang Shiyue: “…”

The sudden light attracted many people's attention.

This chapter is not over yet, please click on the next page to continue reading!