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There is only one speed at which the eye can see and consider, which is the speed at which the optic nerve transmits information to the brain. The speed at which the nerve transmits information is about 100 meters per second, so the optic nerve transmits the image information perceived by the eye to the brain in milliseconds.
As for the speed of light propagation, which was mentioned earlier, there is no need to consider it at all. First, the speed of light is so fast that the light propagation time is completely negligible compared to the nerve conduction time. Second, even if the speed of light is not fast, you don't need to take this time into account, because the object you are observing as a light source is constantly emitting a continuous light signal.
When your eyes turn to an object, the light signal you receive is actually a light signal that the object has emitted some time ago. For example, it takes about 8 minutes for sunlight to travel to the earth, and if you want to see the sun, you can see it as soon as you look up, and you don't have to wait 8 minutes to see the sun. Xiao Ming thought of getting water from the Yangtze River, and the time it took was the time he took to get it when he walked to the river, did he still need to wait for the water to run thousands of miles from Tanggula Mountain to get it after he walked to the river?
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What you see is the image of the light reflected from the object into your eyes and processed by the brain. One is the speed at which light travels into your eyes, and the other is how fast your brain processes it. These two speeds may be what you call "the speed at which you see things".
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Yes The speed at which light travels into your eyes is the speed at which you can see things.
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It's not the same concept, the eye sees things because the light enters the glasses after the imaging vertebral cells convert energy into visual signals that are processed by the brain, and whether you see things quickly or not depends only on the time when the light enters the eye and the brain processes it.
The reason why the eye can see things is because there is light, and the premise that all eyes can see things must have light in the field of vision, and the statement that the eye can see things is wrong in itself, because the eye is just an organ that receives images, and the speed at which things can see depends entirely on the speed of light, that is, the speed at which light travels.
You can't see anything in the darkness without a trace of light, and suddenly someone lights up the surroundings, and you feel that your eyes can see clearly in an instant, because the light shines on the surrounding objects, and the objects reflect the light into the eyes, and the light spreads very quickly, a momentary thing, so the eyes can see the surroundings in an instant.
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