-
Categories
-
Pharmaceutical Intermediates
-
Active Pharmaceutical Ingredients
-
Food Additives
- Industrial Coatings
- Agrochemicals
- Dyes and Pigments
- Surfactant
- Flavors and Fragrances
- Chemical Reagents
- Catalyst and Auxiliary
- Natural Products
- Inorganic Chemistry
-
Organic Chemistry
-
Biochemical Engineering
- Analytical Chemistry
-
Cosmetic Ingredient
- Water Treatment Chemical
-
Pharmaceutical Intermediates
Promotion
ECHEMI Mall
Wholesale
Weekly Price
Exhibition
News
-
Trade Service
[ Focus on Chemical Machinery Equipment Network ] Sometimes, when you look at the chicken soup culture of the Internet with a scientific perspective, you will learn some interesting knowledge and arouse certain scientific thinking.
Just like near, a hot search "How far can human eyes see" spread on the Internet, and the leading word of this hot search is "You can actually see far, far away.
Don't be affected by your brain.
"Restrictions", is it very inspirational all at once? But if we think about this problem from a scientific point of view, do you know how far the human eye can see?
Chemical machinery and equipment network hotspots pay attention to chemical machinery and equipmentJust like near, a hot search "How far can human eyes see" spread on the Internet, and the leading word of this hot search is "You can actually see far, far away.
Don't be affected by your brain.
"Restrictions", is it very inspirational all at once? But if we think about this problem from a scientific point of view, do you know how far the human eye can see?
In fact, this question cannot be answered because the question itself is incomplete.
To define the visual distance of the naked eye, we must first clarify whether the purpose is to "see" or "see clearly", and secondly, we must control the variables-just like the ancient poem said, "If you want to reach a higher level," the naked eye The limit distance that can be seen is related to the height of the observer, the purity of the observation route, the size of the observation target object, the brightness of the object itself or the brightness of its reflection.
To define the visual distance of the naked eye, we must first clarify whether the purpose is to "see" or "see clearly", and secondly, we must control the variables-just like the ancient poem said, "If you want to reach a higher level," the naked eye The limit distance that can be seen is related to the height of the observer, the purity of the observation route, the size of the observation target object, the brightness of the object itself or the brightness of its reflection.
To give a simple example, we can see the sun when we look up during the day, and at night if the sky is clean and cloudless, we can still see the stars.
Those who have studied science know that the stars and the sun are all stars that emit heat by themselves, and even the sun, which is relatively close to us, is more than 100 million kilometers away from the earth (1.
496×10? kilometers).
.
Of course, if we look at it in a more academic way, it also involves issues such as the propagation speed of light, so we won’t go into it here.
Those who have studied science know that the stars and the sun are all stars that emit heat by themselves, and even the sun, which is relatively close to us, is more than 100 million kilometers away from the earth (1.
496×10? kilometers).
.
Of course, if we look at it in a more academic way, it also involves issues such as the propagation speed of light, so we won’t go into it here.
Therefore, regarding the question of "how far human eyes can see", it is difficult to find a reasonable and convincing conclusion even if you search the entire network.
But looking at it from another angle, does it mean that this question has no in-depth value? Up? Naturally not, in fact, the current research is more inclined to "how to see farther" than "how far to see".
But looking at it from another angle, does it mean that this question has no in-depth value? Up? Naturally not, in fact, the current research is more inclined to "how to see farther" than "how far to see".
Many scientific magazines like to use the term "super camera" to describe the human eye when talking about it.
From an objective point of view, there is indeed a certain similarity between the eye and the camera in terms of imaging principles.
From the "performance" point of view, the eyes far surpass the camera in terms of focusing speed and pixels.
But even so, compared with the camera, the eye has a flaw-the focal length.
The focal length of the human eye is fixed, and the camera can realize the imaging requirements of different focal lengths by replacing the lens, and the change of the focal length will affect the focus distance and imaging sharpness of the camera, achieving far and clear imaging.
From an objective point of view, there is indeed a certain similarity between the eye and the camera in terms of imaging principles.
From the "performance" point of view, the eyes far surpass the camera in terms of focusing speed and pixels.
But even so, compared with the camera, the eye has a flaw-the focal length.
The focal length of the human eye is fixed, and the camera can realize the imaging requirements of different focal lengths by replacing the lens, and the change of the focal length will affect the focus distance and imaging sharpness of the camera, achieving far and clear imaging.
So does the human eye have a way to change the focal length? Yes, that is the telescope.
The telescope itself is a very complex family, and the classification basis is very complicated.
It can be divided into monocular and binocular >But whether it is a telescope for observing animals or a telescope for observing the Milky Way and galaxies, their purpose is the same-to allow users to see farther and more clearly within the scope of their capabilities.
The telescope itself is a very complex family, and the classification basis is very complicated.
It can be divided into monocular and binocular >But whether it is a telescope for observing animals or a telescope for observing the Milky Way and galaxies, their purpose is the same-to allow users to see farther and more clearly within the scope of their capabilities.
To some extent, the technological development of telescopes also determines the distance that the human eye can see.
But out of the longing for the "distant unknown", people have invested a lot of time, money, and energy in the development of technology in telescopes, especially astronomical telescopes.
But out of the longing for the "distant unknown", people have invested a lot of time, money, and energy in the development of technology in telescopes, especially astronomical telescopes.
However, the changes that scientific instruments have brought to our observations are not just as simple as allowing us to see farther.
For example, microscopes allow us to break into the microscopic world and see details that are invisible to the naked eye.
So, sometimes it is the exquisite scientific instruments that broaden our horizons.
For example, microscopes allow us to break into the microscopic world and see details that are invisible to the naked eye.
So, sometimes it is the exquisite scientific instruments that broaden our horizons.
Original title: Broaden our horizons and scientific instruments allow me to see more clearly
