Most of the people in the courtyard are a little confused, batteries, generators, what are they? The unheard, the unseen.

"I know, I know the battery", a buzz sounded, and Lei Peidong stood up and took out a small cylindrical object.

"I'll go, it's really a battery" Brother Ha was a little shocked.

Brother Ha knows very well that he just described the performance of the battery in the "Erha Daodian", and did not write what the battery looks like? In such a situation, Lei Peidong can make batteries, which is too talented.

Lei Peidong took out another copper wire and connected the battery and the bulb in series to form a closed circuit.

The light bulbs came back on, shining on everyone's cheeks, and their shocked expressions became clearer.

"This is Ohm's law in the Erha Daodian, in the same circuit, the current through a certain section of conductor is directly proportional to the voltage at both ends of the conductor, and inversely proportional to the resistance of this conductor," Lei Peidong said seriously.

"Oh" Everyone nodded in unison, not knowing whether they understood or not.

Five minutes passed, ten minutes passed, and everyone seemed to come to their senses and accept this indisputable fact.

"It's really successful, it turns out that it doesn't matter if you have a thunder attribute or not."

"Battery, there is such a thing in "Erha Daodian", why didn't I find it?"

"That's because you're not serious about reading, I've seen not only the description of the battery, but also the description of the generator, but I only saw the real living thing today."

"It's amazing, I didn't find Lei Peidong so strong before, why is it like being reborn in these three months?"

"It should be because of the "Erha Daodian", no, I have to take a good look when I go back, there is really a treasure in it."

……

Everyone, you and I have a word, and in addition to admiring Lei Peidong, the value of Brother Ha and "Erha Daodian" has made a earth-shaking leap.

"Ha Shen" Lei Ting unconsciously lowered his body, and said with some hesitation: "I want to ask you a few questions about the "Erha Daodian", I don't know if you are free?" ”

"Cut" Jiang Wanli pursed his lips and smiled in a low voice: "I was still discussing it just now, how did it turn into a consultation in a blink of an eye." ”

"Jiang Wanli, you!" Lei Ting's eyes widened, and he looked at Jiang Wanli viciously.

Jiang Wanli remained silent, and said very naturally: "Erha, it's not early, go back to sleep, you will participate in the foundation building competition the day after tomorrow, and if you don't rest well, it will affect your ......."

"Okay, you won" Thunder instantly said helplessly like a deflated ball: "What conditions do you want, you tell me first, I should be able to call the shots, and if I can't be the masters, I can also ask for instructions from above." ”

"Okay" Jiang Wanli showed a satisfied smile: "I hope that the country of water and the country of thunder will strengthen cooperation, elixirs, formations, spiritual weapons, many, many technologies can be shared." ”

"Uh~" Lei Ting was obviously stunned for a moment, and then said with some shame: "Jiang Wanli, don't deceive people too much." ”

"Each other" Jiang Wanli said disapprerovitically: "How did the Land of Thunder treat the Land of Water back then, now it's just to get back some interest." ”

"Okay, you are ruthless enough" Lei Ting gritted his teeth and said: "I can't be the master of this matter, even if it is reported, the probability of the above agreeing is very low, after all, your reliance is just a dog, and we are the research and development capability of the whole country." ”

"Then let's see" The corners of Jiang Wanli's mouth showed a mocking smile, he had listened to almost all of Brother Ha's courses, so he had a clear understanding of Brother Ha's strength.

"Erha's R&D capability is not as simple as surpassing the country of thunder, it is beyond the whole world, the whole era" Jiang Wanli's heart is very sure, whichever force has Erha, they have the future of the world.

Thunder couldn't understand this yet, so he left in a rage, but the boys of the Land of Thunder stayed, after all, the light of the light bulb was so bright, they still wanted to feel it for a while.

"If only I had a light bulb in my house, I will be honored!" A young man from the Land of Thunder turned red with excitement.

"Don't think about it, you can afford a light bulb, it's beyond your means."

"If anyone can give me a light bulb, I'll marry him" A young girl from the land of water had her eyes shining and her expression was intoxicated.

"Cut, if anyone has a light bulb, they can still look at you, don't daydream" Cao Nima's mouth was fast, and he directly angered a bunch of girls who were obsessed with light bulbs.

"Bang" The hot little beauty White Bell waved her pink fist and smashed it directly on the back of Cao Nima's head.

"Oops, it hurts" Cao Nima turned around, stared at the white bell angrily, and complained with tears in her eyes: "White bell, it's you again, where am I in the way of you." ”

"You insulted us, you insulted us with a light bulb," said the white bell with a straight face.

Cao Nima was angry, and argued with a stiff neck: "I'm telling the truth, okay, a light bulb that can shine, ten of you can't match a guidewire ...... others."

"I'm going to kill you" White Bell's eyes widened in anger, and he was about to pounce on him with his teeth and claws.

"Stop!" Ha Ge burst into a shout and stopped the crowd that was in turmoil.

"You uninformed, you fools, how much is a light bulb worth? If the light bulb can be exchanged for a yellow flower girl, I will be able to make the entire water country men beat the bachelors next month! ”

Brother Ha said and said, he felt funny, just a light bulb, less than ten yuan in his previous life, in this world, he can marry a yellow flower girl with a perfect foundation, and he can pull it.

However, most of the people present did not think it was a joke, the current value of the light bulb is not a civilian commodity, but a luxury, a unique luxury jewelry in this world, there are so many yellow flower girls, who is more expensive is really not necessarily.

"Erha, what did you just mean that the bulb can be mass-produced?" Jiang Wanli was mature and old-fashioned, and he immediately heard the point.

"Hmm" Brother Ha nodded: "As long as there are enough materials, you can produce as much as you want, and basically it doesn't cost anything." ”

"That's right" Lei Peidong also echoed: "I spent less than ten copper plates in total to buy materials, but it took a little effort to make it, after all, it was the first time." ”

"Oh" Cao Nima's eyes lit up, and he hurriedly stuffed money into Lei Peidong's hand, and then said excitedly: "I'll book a hundred light bulbs first." ”

Immediately afterwards, Cao Nima glanced back and said, "Who said just now that he wanted to marry the light bulb, there are a hundred of them here, hurry up and buy them." ”