Chapter 639

It's just a pity that water can't make a significant difference between the refractive index of diamond and glass.

So when Yunwei poured the broken diamond and broken glass into the glass, there was no obvious difference between the broken diamond and the broken glass. They both had almost the same reflection, and the naked eye could not see the difference at all.

Fang Lisa couldn't help saying, "Yunwei, don't waste everyone's time. There is only one minute left. Don't think you can complete this assessment."

Yunwei smiles and scatters the things in her hands into the clear water in the glass. The water slowly changes and becomes a little muddy and thick.

However, as she sprinkled the material in her hands, miracles appeared. Some of them emitted a very bright light, which was hard to ignore, while some of them gradually disappeared, and the light and color were integrated into the water.

Yunwei breathed a sigh of relief and said: "lengshao, what is emitting light now is diamond, and what keeps consistent with the color of water is glass. If you want to pick out the broken drill and broken glass, just light up and pick out the luminous ones

In the cold heart of tomorrow night, Yunwei finally solved the problem!

Although she has some understanding of her intelligence and intelligence, this is the real real insight.

He looked sideways at Yunwei. Yunwei always had a smile on her face, but she didn't have much pride.

Seeing that Leng was looking at Yun Wei all the time, Fang Lisa immediately said, "Leng Shao, don't believe Yun Wei. As you said, you can only use enough things in this conference room to solve the problem. What she was holding just now is obviously what she brought in from outside! Less cold cheating! She must have used some chemicals brought in from the outside, some heavy liquid separation and so on... "

Other students also don't believe that Yunwei can solve the problem so simply, they are not happy to look at Yunwei.

Yunwei spread out her palm and said, "sure, I put some things in the water. The refractive index of glass is completely different from that of diamond, and even the refractive index of glass, water and diamond is not the same. Therefore, if we put them together, it is just like putting them in the air. But if you make the refractive index of water the same as glass, then glass can be integrated with water, and diamonds are particularly eye-catching because of their different refractive index. "

"We can be convinced by your explanation, but we can't be convinced by what you use!" Said a boy.

Several other examinees also shake their heads: "if the examination is not clear, it is not in line with the examination rules, cold less?"

Tomorrow night Leng looked at Yunwei: "Yunwei, what do you say?"

Yun Wei said with a smile: "what I use in my hand can make the refractive index of water become like glass. It's very simple. It's just salt. This is what I found when I was pouring water over there, and then I caught it in the palm of my hand. It's normal for this salt to appear in the meeting room. I heard that many people use salt to wash water cups with tea stains. When meeting in the meeting room, many teachers like to drink tea. It seems that it is normal for the school to prepare salt here

After hearing Yunwei's words, we found that there was indeed a bag of salt at the place where the water was poured. It seemed that it had been put there for a long time.