The meaning of light adaptation and dark adaptation, light adaptation and dark adaptation

The phenomenon of decreased sensitivity to light is also called light adaptation. From dark places to bright places, especially in strong light, you will feel dazzling and dizzy at the first moment, and you can hardly see the outside world clearly, and gradually see things clearly after a few seconds, which is called light adaptation.

From the light to the dark, the sensitivity of the human eye to light gradually increases, reaching the maximum in about 30 minutes, which is called dark adaptation. Dark adaptation is a reflection of the basic function of optic cells, which is the function of light sensitivity.

When you go to a place where you can't see your fingers, and you can see it after a while, that's dark adaptation, and vice versa.

Sensory Adaptation - > Visual Adaptation:

Visual adaptation is divided into light adaptation and dark adaptation.

1) Dark adaptation. People suddenly enter a dark place from a bright place, because the visual sensitivity in the bright place is relatively low, so just enter the dark ground will not be able to see clearly, after a period of time, the visual sensitivity gradually becomes stronger, become able to recognize objects in the dark, this process is called dark adaptation. That is, the process by which visual sensitivity changes from a relatively low state to a relatively strong one.

When the driver meets on the road without street lights at night, both parties suddenly turn off the headlights, and when they suddenly enter the tunnel without lighting in the daytime, there will be a dark adaptation process, so special attention should be paid to driving safety.

It goes without saying that people who have been adapting for a long time have less safety when driving at night or through tunnels.

2) Adaptation. When a person suddenly enters a very bright environment from darkness, they feel the light is dazzling, and the eyes also have a habit and vision recovery process, which is called light adaptation. This is the case when a driver comes out of a long tunnel and sees the sun, or when a miner comes out of a mine.

Adapting to the survival of human beings, that is, the survival of the fittest is already an animal, and it is also the same to the characteristics of the natural contingent that are adapted to the diquartz, mainly the survival of the fittest.

The two adaptation environments are aimed at the obviousness and clarity of operation and use.

The mechanism of action is that the operation ability and control ability of the equipment are different.

Adaptation is through exercise or other adaptations, and adaptation is unconsciously adapted!

Dark adaptation. People suddenly enter a dark place from a bright place, at first the visual sensitivity is very low, unable to see clearly, after a period of time, the vision gradually recovers, become able to recognize objects in the dark, this process is called dark adaptation.

Ming adapts. When a person suddenly enters a very bright environment from darkness, they feel the light is dazzling, and the eyes also have a habit and vision recovery process, which is called light adaptation. This phenomenon occurs when the driver comes out of the long tunnel and sees the sun.