How does light make us see objects?

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How does light make us see objects?

How does light make us see objects?

How does light make us see objects?

How does the lighter make us see objects?

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How does light make us see objects?

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Asked by: Ku Bing Wang Xiaorou - Tong Sheng Level 1.

There were 4 responses.

The reflection and refraction of light by an object makes us see the object.

The reflection and refraction of light by an object makes us see the object.

The reflection and refraction of light by an object, which enters the human eye, is presented on the retina, and allows the person to see the object.

How do human eyes see? Does what we see have anything to do with the refraction of light?

The human eye can see things clearly mainly because of the refraction of light, and today I will talk to you about this situation. Some people say that the eyes are the windows to the soul, and I think that's true. In fact, when we only talk with others, we observe his inner world through our eyes, and at the same time it is also a vital sense for us, without which the eyes can speak, then we will live in the dark all our lives, and it is impossible to experience the colors of this world.

The light source spills into the lens and retina of the eye from the outside, and then reaches above the macula of the fundus, in fact, in this process, there is a signal conversion that converts the data signal into an electronic signal, which is a more complex process, after people's glasses, there is an eye nerve connected with the macula of our fundus, and the eye nerve may transmit the data signal to our brain. The human brain is a very wonderful human organ, generally speaking, every information content will be integrated through the human brain, and we can see the prospect clearly after experiencing the human brain solution and analysis. Although these processes are instantaneous, they contain more and more information and chemicals.

We all know that it is important to protect our eyesight, because our eyesight can change according to our daily habits, and it can even lead to blindness. Eyes are a fragile object and should be taken very carefully when protecting their eyes. How many people have insomnia because of bad habits, and in the end they can only be in grief, which is an unnecessary result for us, and at the same time it is an avoidable situation.

The eyes are really the main visual organs of the body, and once we lose our sense of chemicals, we are permanently missing.

Light is an electromagnetic wave that belongs to the part of the visible light band in the electromagnetic spectrum. It propagates in the form of electromagnetic waves in a vacuum and in some media, with oscillations of electric and magnetic fields.

The characteristics of light waves include wavelength, frequency, velocity, and energy. According to different wavelengths, visible light bands are usually divided into seven colors: red, orange, yellow, green, blue, indigo, and violet. Its wavelength range is about 400 nm to 700 nm.

Light can be emitted, reflected, refracted violently, scattered, and absorbed, and these phenomena are the basis of optics and optical devices. The transmission of light plays a vital role in our daily life, and we rely on light to perceive objects and the environment through vision.

In conclusion, light is an electromagnetic wave that has a wave nature and plays an important role in our observation and understanding of the world.

We usually see objects mainly by the (diffuse) reflection of light.

Diffuse reflection: When a parallel incident ray hits a rough surface, the surface will reflect the light in all directions, so although the incoming rays are parallel to each other, due to the inconsistency of the normal direction of each point, the reflected rays are irregularly reflected in different directions, this kind of reflection is called "diffuse reflection" or "diffuse". The reason why the human eye can see the whole picture of an object is mainly due to the imaging of diffuse reflected light in the eye.

Summary. It can be said strictly that the light of an object is reflected to the human eye, and the brain processes it before the object can be seen, so what the human eye sees does not happen all the time.

The light of an object is reflected to the human eye and processed by the brain before the object can be seen? So isn't what the human eye sees happening all the time?

It can be said strictly that the light of an object is reflected to the human eye, and the brain processes it before the object can be seen, so what the human eye sees does not happen all the time.

Pro: What we say"See", refers to the information that has shapes and colors that enters our consciousness, and cannot be said if it does not enter consciousness"See"。"See"The process is roughly as follows: First, the light wave hits the object, causing refraction.

Light waves enter the retina of our eyeball, and the retina converts the light waves into electrical signals through photoelectric conversion. The brain sifts through the signals and removes them as unnecessary. The rest of the signals are compared, modified, and finally"Feed into the "Consciousness Imaging."

The above process is said to be 300 milliseconds - 400 milliseconds. So we"See"The pictures have been edited and corrected. Otherwise our consciousness will be confused.

To take the most direct example, if the brain does not process information, we see the world as a red blur, because our retina is full of capillaries. The world's ** has a big black hole. That's where the nerves of the retina are concentrated.

External information enters consciousness and has already been processed. So it can also be said that it is not an instant picture.