After not showing up for a long time, Mu Yuan's arrival once again made the classroom of the University of Political Science and Law lively, even if Professor Liu walked into the classroom, it was still difficult to eliminate the enthusiasm of the students to ask for autographs.

"Invitation?" Makihara took a red envelope and habitually picked up the pen, not stopping until he saw the name on it.

"The wedding of Senior Sister and Senior Brother Liu Chang!" Liu Nian said with a grin.

"It's okay to notice it, why is it so formal!"

"Hehe, little junior brother, senior sister is worried about your big red envelope!" Wang Yuhan said with a smile, "By the way, did Senior Brother Liu Chang inform you, you want to be the best man!" ”

"Me? Groomsman? Makihara was stunned and asked, "Why are you looking for me?" ”

"You look good!" Wang Yuhan said with a smile, looking like a nymphomaniac, "You can't look for Lu Huaxin, that fat pig doesn't make the guests laugh!" Look at these few again, crooked melons and cracked dates! ”

"Not really!" Fang Shenchao retorted, "I haven't heard of it, you must find the ugly one when looking for the best man, so as to bring out the groom's talent!" Liu Chang picks and chooses, that is, you are the most suitable! ”

Mu Yuan made up his mind, took advantage of the time to go to Liu Chang to have a good talk, and postponed the best man's errand.

"What about Senior Brother Lu Huaxin? He didn't dare to come to Professor Liu's class? Mu Yuan looked around, the class was about to start, and Lu Huaxin's shadow was still missing.

"I don't know!" Fang Shenchao shook his head, "That guy has locked himself in the laboratory for several days, and he has used it as a dormitory!" ”

After the class, Mu Yuan said hello to Professor Liu and the others, and went straight to the experimental building. Walking through the rooms, Mu Yuan went to the laboratory last time, looked in from the window, and sure enough, he saw Lu Huaxin standing in front of an experimental table, as if he was looking at something.

I haven't seen her for half a month, Lu Huaxin's appearance is comparable to that of a beggar on the side of the road, her hair is messy like a chicken nest, her face is stubble except for stains, and there are a lot of leftover rice grains on the clothes on her chest, which are firmly stained on her clothes after drying.

"Muyuan, you're just in time!" Lu Huaxin beckoned and motioned for Mu Yuan to hurry over.

As soon as he walked to the table, Mu Yuan involuntarily took a few steps back, the smell of this senior brother was really bad, and the chemical reagents were mixed with a strong smell of sweat and fox odor, which could smoke people.

"Senior brother, how long has it been since you took a bath?" Makihara pinched his nose and asked.

"Take a bath? Yes...... Ten days! Lu Huaxin raised her arm and sniffed the smell on her body, "Does it smell bad?" It doesn't smell good! ”

"Alright, you can say it quickly!" Makihara gently opened the window to let fresh air into the laboratory, "What did you find?" ”

"Mu Yuan, this thing is too evil!" Lu Huaxin pushed through an iron shelf, which was covered with pulleys and ropes, and it was dazzling to see, which seemed to be specially made to move the fragments of the Stygian Iron.

"Alright, I'll do it!" Mu Yuan waved his hand and gently picked up the metal block, "Where to put it?" ”

"Here!" Lu Huaxin pushed away the iron shelf, ran to another table, and pointed to the precision electronic scale on the table, "Mu Yuan, I found that the farther away from this thing, the less force you need to pick it up, as if a person's magnetic field can change its weight!" ”

"That's all?" Makihara was dumbfounded and asked, does this need to be studied?

"You wait!"

Lu Hua picked up the plug on the ground and inserted it into the jack on the wall, and the other end of the wire was connected to a thin metal rod like chopsticks. Slightly adjust the angle of the metal rod so that it was just able to touch the Stygian Iron without affecting its weight. The other end of the Stygian Iron touched an identical metal tie rod, but the other end of it led to a light bulb.

"Muyuan, look at it!" Lu Huaxin smiled and pressed the power switch hard.

A blue arc of electricity emitted from the tip of the metal rod and was channeled into the Stygian Iron, while the light bulb at the other end did not light up.

"This thing isn't metal?" Makihara asked in surprise.

"It's metal!" Lu Huaxin explained, "You don't have to doubt that! ”

"If it's metal, why doesn't it conduct electricity?"

"It's not that it doesn't conduct electricity, it's that the electrons haven't completely passed through it yet!" Lu Huaxin thought for a while, "Let's take an analogy, if you think of electricity as water, then these two metal rods are conduits, and this thing is like a sponge in the middle of the conduit, and only after the water completely soaks it can the water be channeled through?" ”

"Battery?" Makihara blurted out.

"Yes, yes, you can see it that way!" Lu Huaxin nodded, "But it's not an ordinary battery, but a battery with a reserve that can scare people to death, I spent a week before charging it, but it has never been filled!" Even...... Even if I use a high-power transformer to charge it, it doesn't work! ”

"You...... Are you sure? ”

"Sure!" Lu Huaxin scratched her head, "The electricity card in our bedroom has been charged twice, this thing is like a black hole, it seems that it will never be filled!" ”

"Perhaps...... Maybe it's channeling power somewhere else! Looking at the insulated plastic tray under the Stygian Iron, Makihara also felt that his words were a little funny.

"No!" Lu Huaxin said confidently, he pointed to the electronic scale, "Look here! ”

This electronic scale is an instrument specially designed for precision measurement, and its accuracy can reach one thousandth of a gram. Mu Yuan looked down at the scale, but he didn't see any change, he glanced at Lu Huaxin in confusion, but the latter only gave him a slightly calm look. After a full five minutes, Makihara was surprised to find that the number on the electronic scale suddenly jumped.

"I've calculated, a large amount of charging can indeed change its quality, but this mass increase is not proportional, for example, changing the first 0.001 grams requires 10,000 amperes, but changing the second 0.001 grams is much greater than 10,000 amps, which is ...... It's really weird! I originally wanted to measure this variable equation, but it took too much power and time, and the power loss caused by the resistance was difficult to calculate! ”

Makihara was already shocked by what he saw, he raised his hand to pick up the piece of iron, and when he got closer, he realized that this thing was still electric.

"It's okay!" Lu Huaxin said indifferently, "As long as you don't touch the radiated arc, you will be fine!" ”

"This ...... Have you tried it too? ”

"I ...... I was so invested that day that I wanted to test its resistance, but I forgot about it after the power was turned on! Lu Huaxin scratched her head, a little embarrassed, but after a second, she became excited, "It is precisely because of this that I discovered this characteristic of it!" ”

Mu Yuan quickly touched the fragment of the Stygian Iron with his fingertips, and as Lu Huaxin said, there was no sign of electricity on the Stygian Iron. Only then did Mu Yuan put his mind at ease and carefully took out the dark iron, while Lu Huaxin hurriedly cut off the power supply. After Mu Yuan observed for a while, Lu Huaxin motioned for him to put the dark iron back, adjusted the angle of the metal rod, and waited for a few minutes, and the small light bulb at the other end slowly lit up.

"Amazing!" Lu Huaxin rubbed his hands excitedly, "This thing is amazing, this is a natural energy storage, if it wasn't too heavy, I would definitely be able to transform it into the most powerful battery, and the most stable battery!" ”

"Can it store anything other than electricity?" Makihara asked.

"Yes!" Lu Huaxin nodded excitedly, "As long as it is not a substance defined by modern science, such as electricity, magnetic field, and heat, I can even predict that light can also be stored, but it is not our common natural light, because light is also an energy wave, and its characteristics are the same as magnetic fields and heat!" "I want to talk to more like-minded people about "{?$article_title?} ", WeChat pays attention to "excellent reading literature", chatting about life, looking for confidants~