The experiment was conducted very quickly, and each group had a time limit of ten minutes.

Therefore, everyone who enters the field is racing against time to conduct experiments.

The capital city was still very hot in September. Jiang Wuyang found a cool place outside the yellow cordon and squatted there, waiting for the previous group to finish.

Seeing this, Wang Le also squatted beside her.

Finally, the bell rang and the people doing experiments inside came out one by one.

Jiang Siqi didn't even look at Jiang Wuyang again, and flew to Wang Le like a butterfly.

"Brother Wang Le, do you know what I got?"

"What?"

"I got the wavelength for double-slit interferometry." Jiang Siqi said excitedly.

"Our teacher emphasized this before the exam, and my experiment went very smoothly."

While Jiang Siqi was talking, she kept an eye on Jiang Wuyang's movements.

Jiang Siqi's voice kept coming into Jiang Wuyang's ears. Jiang Wuyang didn't even raise his eyelids, but took a step forward.

She's in the next group.

After the teacher finishes grading and the exam room is restored, the next group of students enters the laboratory.

Jiang Wuyang walked in and sat down according to his number.

"Check the tools on the table to see if they are intact and if they are broken or damaged. If so, please report it."

"Check whether the table is clean and whether I am carrying any prohibited items. If so, please report it."

The teacher will give a reminder five minutes before the class starts.

Jiang Wuyang glanced at the equipment on his desk. It was also using double-slit interference to measure the wavelength of light, the same as Jiang Siqi had just used.

The parts needed on the table are scattered and need to be put together by yourself. After that, observe the light through the double slit and calculate the wavelength according to the formula.

If there is a mistake in any step, it will directly affect the result.

Jiang Wuyang patiently picked up the parts and checked them. He quickly went over each part and found no problems. He raised his eyebrows slightly.

Just as I was about to carefully check the equipment, the teacher's voice rang out.

"Time is up, please put down the tools in your hands and wait patiently for the exam."

Jiang Wuyang could only let it go.

The bell rang and the experiment began.

Ten minutes is a short time, so experiments can only be carried out quickly, and it is a test of proficiency.

Therefore, this is also the key to screening out a group of people.

Jiang Wuyang moved quickly, installing the light source and assembling the lever. His movements were very quick, and after all the operations, the only thing left was the last step, which was to install the convex lens.

The convex lens should be positioned flush with the light source.

Jiang Wuyang picked up the convex lens and prepared to fix it through the device.

etc?!

The convex lens is in the wrong position!!

The lens consists of two parts, a mirror part and a thin rod.

Logically speaking, this lens position should be flush with the light source through the fixed support of the rod.

But now, even if Jiang Wuyang adjusted the lens installation part to its longest length, it was still lower than the location of the light source!

This is wrong!

Jiang Wuyang frowned, took the convex lens in his hand and looked at it carefully.

The connection between the top and the base of the lens is not smooth at all and is very jerky.

Jiang Wuyang pursed his lips, twisted it hard, and separated the top of the root.

I put it together again, and this time it didn't lag, but it was still a little shorter.

Looking up at the clock, there were still six and a half minutes left. Jiang Wuyang thought for two seconds and made a quick decision.

Fix the bottom end of the root to the device, and then align the position of the convex lens with the light source.

After determining the position, Jiang Wuyang tore off the Band-Aid wrapped around the wound on his finger and gently wrapped it around the middle to act as a simple fixation.

After confirming the alignment, turn on the light source and replace the red and green filters in turn.

Use the simple device to start observation and measurement, and record the data while measuring.

After all the data has been recorded, we can start calculating the wavelength of light according to the formula.

Jiang Wuyang picked up a pen and started calculating quickly on the A4 paper.

Just as the answer appeared on the paper, the bell rang.

The timing is just right.

Jiang Wuyang curled his lips slightly.

"Exam takers, please stop moving and leave the venue in an orderly manner."

The invigilator's voice rang out.

The students present left in order.

After leaving, there will be a grading teacher to score the experimental operations.

Jiang Wuyang glanced at the experimental operation on his desk, turned around, and walked towards the invigilator before leaving.

………

When I left the examination room, I only saw Xi Wencheng waiting at the door, and Jiang Siqi was standing not far from Xi Wencheng, which was unusual for her.

"How about it?"

Jiang Wuyang lowered his eyebrows slightly: "I didn't aim."

Xi Wencheng was shocked and couldn't believe what he heard.

"What did you say?!"

"Which experiment did you draw?"

Jiang Wuyang pursed his lips, not daring to look up at Xi Wencheng, feeling guilty: "Double-slit interferometry measures the wavelength of light."

Jiang Siqi, who had been listening attentively nearby, raised the corners of her mouth impudently when she heard these words.

Xi Wencheng was so angry that he fainted.

He has conducted these experiments with Jiang Wuyang dozens of times, and even expanded them to extracurricular activities. How could he possibly stop here?

As he was thinking, Xi Wencheng realized something was wrong. This girl has always been smart, so why is she like this?

He glanced at Jiang Wuyang furtively, and when his clear eyes met hers, Xi Wencheng's heart relaxed immediately, but he was speechless afterwards. This damn girl was just pretending.

But why does she pretend?

Xi Wencheng was puzzled until he saw Jiang Siqi next to him, and everything became clear.

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