From a physical point of view, visible light is only a type of electromagnetic wave, or in other words, it is just a visible electromagnetic wave, and different organisms can see different visible light.
The human spectrum covers between 312 nanometers and 745 nanometers, and snakes even have infrared vision, which means the wavelength is larger than red. It is this ability that gives snakes similar thermal imaging capabilities.
.
Therefore, from this perspective, human visible light is special only for humans, but for other creatures, it is another kind of special.
Of course, from a scientific point of view, this is the case.
From a theological perspective, light is a creation of God that enables people to walk under the light.
But no matter what the explanation is, light is obviously an essential thing in human life.
But obviously, for the blind, this is indispensable and has become a must-have.
For those who are congenitally blind, this is even more desperate, because they don’t even know what the world looks like, they don’t know light, dark, lake blue, or navy blue.
After all, when explaining to them, it is impossible to say to them: "The RGB value of 0,235,192 is lake blue, and the RGB value of 0,0,128 is navy blue."
So for Tingting, she never knew what "brightness" meant.
However, at this moment, after Chen Xuan's explanation, you were finally confused as to what "bright" meant.
"That's light, is that brightness?"
Tingting felt quite surprised in her heart.
Can you really see the light?
In other words, can you really see that world?
But very slowly you asked: "But why can you only see light now? You can still see your father."
Chen Xuan smiled slightly, "He used it first because some medicine was used for his eyes, so now his eyes are wrapped with gauze. It will take a while for the medicine to be absorbed before it can be uncovered, so...
Let’s wait for now.”
"good!"
Tingting agreed happily.
Then, you waited with peace of mind.
Anyway, I have been waiting for so long, and I am missing a few hours.
Just like that, time passed very slowly, and it was several more hours.
And the sky has already turned white.
Of course, although the sky is white, the light in the bustling city is still bright.
The thousands of lights in the window contrasted with the bright light inside the window.
At this time, the nurse finished treating the eight blind people and removed the gauze from under our faces.
By this time, judging from the reactions of the eight blind people, it was basically certain that our vision had been restored.
So we should now be able to call them "formerly blind".
In the past, it was possible to combine those two words in that way, because a blind person would have a way to recover before he became blind.
"Come on, Tingting, sit up, sister, let him see the world inside now."
The elder nurse said to the elder sister gently.
Tingting also sat up obediently, and then waited for the nurse to remove the thing under her face that was the first thing that blocked her from contacting the world.
Quickly, the gauze was lifted off.
The white lower eyelids were raised quickly, and a pupil that looked like a pair of colored contact lenses appeared outside.
For the sake of appearance, the pupils were made like that, but it doesn’t have the feeling of small seven-dimensional eyes.
However, no one around him cared about how beautiful the contact lens was at this moment, but cared about whether Tingting could regain her sight.
However, what we are all confused about is that when Tingting opened her eyes, you seemed to be stunned.
You opened your eyes and stared blankly behind you.
Everyone is thinking, what happened to Tingting?
But in reality, Tingting was just shocked by everything behind her eyes.
As the gauze is lifted, you open your eyes, and the colorful world suddenly appears in your field of vision.
You watched in shock, and your cerebellum seemed to be shocked. You thought that more than ten years had passed, and your visual nerve, which had never been functioning, suddenly sent you so little information, so you ended the transfer.
All it takes is a rusty optical information processing area to finish processing the information, and then allow its owner to see those things.
So, she knew what color the ward was, and there was no quilt of the same color as the ward, and there were so few people standing around... Items that were probably people, were seen by Tingting.
"Tingting, how is he...?"
There was a sound coming from the side. Tingting turned around and looked at the place where the sound came from. You saw a person - you were almost certain that it was a person.
And this voice is also Tingting's own voice.
And before that, you suddenly pounced.
"dad!"
you shouted.
"Dad, you can see him!"
When she felt the man hugging her arm, the woman's expression suddenly changed.
From excitement to depression, from relief to lamentation, but in the end it all turned into tenderness towards the man.
"Dad knows. Dad has been watching him."
Looking at that scene, everyone around them could not help but be moved by it. Even the nurse who removed Tingting's gauze later had her eyes reddening and becoming moist.
Such a scene is the meeting between father and son before their separation seventeen years ago.
At that time, another excited voice came from the other side of the ward.
"You can see again! You can see again!"
Everyone looked again and saw that the person who shouted those words was the 35-year-old blind man. He was once a sighted person, but he gradually lost his vision due to heavy blows to his eyes.
If Tingting is the excitement of gaining darkness, this is the joy of regaining darkness for me.
The latter comes from the sense of gap that no one else has but only you have. The former comes from the regret that you once had but lost.
At this moment, we are depressed by the gloom behind our eyes.
First of all, this eighty-year-old man also successfully restored his eyesight. The old man had been blind for nearly eighty years. The joy of regaining his eyesight at this time cannot be overstated. It means that when he is getting old, he can regain his sight.
I can look at that world a few more times, or look at my children again.
At this time, the old man had met my child again. When I lost my sight, my child was still young, even ten years old. But now, before I regained my sight, looking at this child is like my own.
A child who looked very similar to me when he first lost his sight.
The old man smiled, reached out and touched the child's face heavily, and said, "He has grown up, and you can finally see him grow up with your own eyes."
After hearing his father's words, my son, although he is now in his eighties, burst into tears and hugged his father.
"dad!"
…
There were so few touching scenes that everyone present could not help but be moved by them.
Seeing that world is quite an unusual thing, but under the circumstances of a blind person, it becomes even more abnormal.
But at this moment, we can all see, or see that world and our loved ones again.
People were moved with emotion.
While feeling emotional, no one has forgotten what it was that made that scene become a reality.
Electronic prosthetic eyes!
Everyone turned their attention to this genius scientist.
At this time, Chen Xuan was also looking at everything behind him with a smile.
I am the happiest person to see the technology I created realize such a scene.
That's exactly what I paid for, what I wanted to get in exchange for it!
Of course, I also experienced a little bit. This is the power of technology.
Technology is constantly developing, and there will inevitably be fewer such scenarios in the future.
Just like in the past, when the technology of video conversations through cameras first appeared, it was known that many people who were far away from each other and could only miss their loved ones through photos could also chat face-to-face with their loved ones while sitting at home.
scene.
Chen Xuan felt deeply moved by it.
That is where technology should really play its role and show its charm, but these killing technologies that appear for war and killing.
But what can be done is that those weapons have to be developed.
Thinking of that, I sighed heavily.
Next to him, Lin Xiao, who had never left, suddenly asked: "Academician Lin, why are you sighing? What a beautiful scene, sighing is good."
Chen Xuan smiled and waved his hands: "You know, I just don't have any feelings in my heart."
Lin Xiao nodded and asked Chen Xuan what he was feeling. There are always moments when people are sentimental, and I have never been sad for spring or autumn.
Of course, looking at all that at this time, I could only feel depressed.
"That's great. Now, you may know the answer to the question just now."
Cheng Xing was startled and then thought of this problem.
I smiled and asked, "What does he think the answer is?"
Cheng Xing smiled and said: "The answer is - why do you want so little time? You can see what that world looks like, but you are old, so you still have to spend less time with your family, hey, so you
Let’s go first.”
Then I waved my hand, turned around and walked towards the door. At the same time, I shook my head and said: "It's rare that you have nothing to do or do any research today, but you still come to the hospital to hang out. It's really a sin."
Chen Xuan was stunned, looking at Lin Xiao's leaving figure, and then shook his head with a smile.
Birth, old age, illness and death are inevitable topics for human beings!
What will happen when I face those seven?
I'm vague.
No matter how little care I took, I turned around and walked behind the window, looking at the thousands of lights in the window. Maybe there was one light among them that was lit for me. I doubted it. Everyone outside would be grateful for what I had done, right?