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"What did you two find?" Ning Wanfei asked.

"What did my sister find?" Ning Wanjia took the two strip-shaped objects in Ning Wanfei's hands.

A jet-black carbon rod and an off-white tin bar, these two materials are quite commonly used in chemical practice.

"Black and white. Liang Yuan smiled and took out the two bottles in the kit.

"Caustic soda and ...... Magnesium diboride?"

"Xiaoyuan, what is magnesium diboride used for?" Ning Wanfei asked curiously.

"I don't know, but I vaguely remember which teacher mentioned that this thing is used in fireworks to match colors, magnesium is bright silver in fireworks, and boron seems to be green. Liang Yuan said with some uncertainty.

"There's one left, what should we choose? Oops, I'm dazzled. Looking at the glass bottle full of eyes, Ning Wanjia said coquettishly.

"Let's split up and look for mercury, which is the first substance in human history to be conducted, and writing it into the project report can also add some historical flavor. Liang Yuan said with a smile.

The two girls nodded, and the three of them shook around the room for another five or six minutes, finally preparing the five contrasting materials.

When I went out of the building, the staff at the door looked at the toolkit on Liang Yuan's back with some suspicion, but fortunately, it was covered with the big seal of the hospital office: all units were asked to assist Liang Yuan, Ning Wanjia, and Ning Wanfei, and the strip of preparing for the Youth Science and Technology Innovation Competition played its due role.

Without inspection, Liang Yuan successfully brought five kinds of contrasting materials out of the real building.

It can be regarded as avoiding trouble, otherwise after the matter detonates. There is a good chance that the manager of this real yàn building will be swept into the vortex, Liang Yuan thought to himself.

It was already more than two o'clock in the afternoon when the three of them returned to the guidance center, Ning Wanjia took out three bottles of mineral water from the freezer in the corner and handed them to Liang Yuan and Ning Wanfei, and after resting for a while, the three of them began to do comparative tests.

In addition to magnesium diboride, sodium hydroxide, carbon, and tin can guide Liang Yuan I don't know at all, in order to avoid the first one to take magnesium diboride as a real comparison, Liang Yuan proposed to practice with mercury first.

The two girls were also excited, curious, and apprehensive about verifying the comparison materials, and praised Liang Yuan's construction.

The conductivity of mercury is easily detected by connecting it to a liquid helium refrigerated recirculating freezer. When the temperature inside the insulation device drops to 4.2K. The resistance of the mercury suddenly disappears.

Liang Yuan followed the process of testing the conductivity of mercury, repeating the work that had been verified by countless predecessors, while the two girls intently memorized a series of test numbers on the test report.

At 14:37, the refrigeration equipment was operating normally. The contrast material, mercury, cooled down to 79k. Measured Resistance ......

14:43 minutes. Comparison material mercury, temperature 23K, measured resistance ......

14:52 minutes. Compared to the material mercury, the temperature is 4.1K, and the measured resistance is zero.

Liang Yuan said word by word the number of tests observed in real time.

"Okay Xiaoyuan, we're all done. Ning Wanfei shook the Wen Jiàn clip in her hand.

"There are four more, and they all finished testing the electromagnetic guns and completely called it a day. Ning Wanjia said excitedly.

"Xiaoyuan, do you think our electromagnetic cannon can win the award? ”

"If I could tear down the wall, I would probably be able to cheat 10,000 yuan of pocket money, and now I can mix 3,000 thank God. Liang Yuan said with a smile.

Liang Yuan knew that although this thing was magical in the eyes of ordinary people, in the eyes of those academicians and judges of the Youth Science Competition, it was definitely not as good as the form processing system opened by Wang Mengmeng.

If Ning Wanjia's Jianyì is adopted, the electromagnetic cannon is renamed the Earth Orbit Propulsion Device, and then the wire drive is changed to a reconnected orbit, after such a major change, there is still a glimmer of hope for the top award in terms of creativity.

Now the electromagnetic cannon has been dismantled by Liang Yuan, and the soft lying on the ground does not even have the visual shock of piercing the coin.

"Xiaoyuan, a big liar, also said that he wanted to shock those old men in Beiping. Ning Wanjia glanced at Liang Yuan.

"It's not bad to have this kind of ending, only one wall and one cabinet were destroyed, and things were successfully manufactured, and Xiaoyuan, a reliable Cheng dù, is second only to the air conditioning fan. Ning Wanfeijiao said with a smile.

"You two are already little rich women, don't be so wealthy, okay. Liang Yuan rubbed the fair cheeks of the girl beside him.

"What are we testing next?" asked Liang Yuan, pointing to the remaining four materials.

Stretching her curvaceous waist hard, Ning Wanjia yawned cutely and said, "Take advantage of the current spirit, let's get those two powdered ones first, or you will be sleepy for a while, and the filling will easily fail." ”

Picking up the white sodium hydroxide casually, Ning Wanjia walked towards the equipment used to prepare yttrium-barium-copper-oxygen high-temperature conductors.

Randomly selected 2oo, 4oo, 6oo three temperatures and atmospheric pressure, double the atmospheric pressure two pressures as parameters, Ning Wanjia first loaded the sodium hydroxide powder into the silver tube hot rolling molding, and then cooled the finished product naturally and threw it into the cryostat to measure the resistance.

Sodium hydroxide can conduct electricity in the molten state or when it is broken down by tens of thousands of volts of high-voltage electricity, and theoretically all substances that can conduct electricity may be conductive, for example, when the pressure is high to a certain degree, almost all substances are conductive.

However, in terms of the equipment used by the three people and the parameters selected, there is still a considerable distance from the high temperature and high pressure treatment, and the three people tossed for nearly two hours, and came to the test conclusion that sodium hydroxide does not have conductivity at low temperature at atmospheric pressure or double the atmospheric pressure.

"After this powder, the remaining two are much simpler. Ning Wanjia shook the gray-black magnesium diboride in her hand.

"It's still a solid material to save trouble, put it directly into the thermostat, and you can write a conclusion by picking a few parameters. Ning Wanfei bit the end of the pen in her hand with her teeth, and looked at the remaining carbon rods and tin bars on the real platform.

Liang Yuan didn't speak, but just smiled at the two girls, for fear that the fluctuations on the love xù would distort his voice and be detected by the sensitive Ning Wanjia.

The girl slowly put magnesium diboride powder. Inject into the container held by the robot, close the material door of the machine and start selecting the parameters.

"It's good to raise the temperature a little, sister, the temperature parameters of this heat treatment are 3oo, 5oo, 8oo degrees Celsius, and the pressure remains the same as just now. Ning Wanjia stared at the temperature indicator on the device and Ning Wanfei said.

"Okay. Ning Wanfei nodded.

After a while, the hot-rolled magnesium diboride wire rod that was selected for filling and hot-rolling at 300 degrees Celsius was officially baked, and was naturally cooled by Ning Wanjia on the material tray.

Ning Wanjia turned around and continued to prepare the second magnesium diboride wire at 6oo degrees Celsius, but Liang Yuan couldn't help but circle around the shiny wire a few times.

A few minutes later, this is about to be born that will shock the whole world, and Liang Yuan's mind is not sure what kind of storm he will face if he takes this step.

Sometimes. The pressure to dig into the corners of history is still quite high. Someone thought with emotion.

"The second one is fine. Ning Wanjia put the magnesium boride wire prepared at 6oo degrees Celsius into another tray.

"I'm going to do it, and this time it's Xiaoyuan's turn to record. Ning Wanjia smiled and handed the test record to Liang Yuan.

Taking over the test record, Liang Yuan quietly took a deep breath. He gently patted the back of the girl's hand. "Be careful when replenishing the circulating freezer with liquid helium. Do not splash on your hands. ”

"Yes. Ning Wanjia replied heavily.

At 18:33, the refrigeration equipment was running normally, and the comparison material magnesium diboride cooled down to 75k. The measured resistance .......

At 18:41, the comparison material magnesium diboride, the temperature was 58K, and the measured resistance was .......

, the measured resistance .......

Liang Yuan and Ning Wanfei lowered their heads, and focused on recording the various numbers that Ning Wanjia said on the test record, and in the slightly empty Daoshi room, only the girl's crisp and graceful voice floated in the space.

There is also 7k, a historic moment is coming, Liang Yuan looked at the temperature number of 44k that he had just written down on the test record, and took a deep breath.

Ning Wanjia's crisp voice sounded exactly on time.

"At 18:57, the comparison material magnesium diboride, the temperature is 35K, and the measured resistance is ....... zero. ”

After Ning Wanjia blurted out the word "zero", the whole person was stunned, not only Ning Wanjia, but even Liang Yuan, who had been prepared in his heart, was also slightly in a trance.

Liang Yuan looked up, and the two girls at this time had their mouths slightly open, their apricot eyes were round, and their expressions were generally stagnant.

The fountain pen in Ning Wanfei's hand had already penetrated the small half of the test record, and the tip of the pen that had been overstressed had been twisted at a very strange angle.

It seemed like a century, and it seemed like a moment, and two screams erupted almost at the same time.

"Oh my God, Xiaoyuan, what have we done??? what have we !! appeared"

"If Dean Zhao hadn't lied to us, I'd bet no one had ever shown this thing, never before. ”

With the sound of "Bang Dang" and "Bang Dang" chairs turning over, two slender figures crashed into Liang Yuan's arms in no particular order.

After more than a month of study and popular science, the two girls who have established a comprehensive understanding of the guide material have realized that just a few tens of seconds ago, a new guide material has become a reality in front of the eyes of the three of them.

A critical transition temperature of 35 K has never been seen in any known test records on the planet.

For three minutes, the two girls who were extremely excited hugged Liang Yuan's neck and didn't let go, and kept repeating "Xiaoyuan, what have we done".

Not long ago, CCTV's news broadcast just reported that the first prize of the National Natural Science Award, the highest scientific honor of the Republic of China in 1989, will be awarded to Zhao Zhongxian's scientific research team that discovered the high-temperature conductor in the liquid nitrogen temperature zone in 1988.

If you look at the list of winners of the first prize of the National Natural Science Award of the Republic of China over the years, you will see a series of thunderous names, Qian Xuesen, Li Siguang, Hua Luogeng, Wang Ganchang, Chen Jingrun...... , it can be said that the stars are shining and the bulls are rampant.

The winners of the first prize of the State Natural Science Award are all the heroes and backbones of the Republic in related fields.

For many years after the founding of the Republic, if there were no sufficient scientific research results in those years, the first prize of the National Science Award of the Republic would have been vacant, which shows how important a new conductive material is to the scientific community.

It is precisely because the two girls understand the authority and scarcity of the National Natural Science Award of the Republic that they will instantly understand what the scene that has just been born in front of the three of them will represent. (To be continued......)