Time is the manifestation of movement and change, the internal regulation and component of the world and everything, and the "thing" or material that is in the relationship of unity of opposites with other components of the world and everything and conforms to the objective reality.
Time is the manifestation of the movement and change of the world and everything.
Movement and change can only happen within a certain period of time. At a fixed point in time, the world and everything will not move and change. When we observe the movement and changes of the world and everything, we must have a specific time period as the condition of observation. Without a specific period of time as a condition for observation, we can't find any characteristics of movement and change.
For example, the arrow does not move. It is said that if an arrow shot with a bow is fixed at a certain point in time, it will only move from one place to another in a period of time.
For example, we use cameras to photograph moving objects. When shooting, the shorter the opening time of the camera lens shutter, the clearer the image, and the longer the opening time of the lens shutter, the more blurred the image.
Time is the internal regulation and component of the world and everything.
The world and everything are defined by time. Without time, there would be no world and everything. Without a certain time, nothing can exist.
For example, when a person is born and when he dies; A tree has a life span; The earth, the sun and the milky way are also objects that exist in a certain period of time. After a certain period of time, people are not real people, trees are not real trees, and the earth, sun and galaxy are not real earth, sun and galaxy.
Time is an objective and realistic "thing" or substance in the unity of opposites with other parts of the world and everything.
Time is different from movement and change. Movement and change are the essence of time, and time is the expression of movement and change. Time is also different from quantity. Time is the essence and internal regulation of quantity, and quantity is the manifestation of time. Clocks invented and widely used by human beings are tools to record the length of time. People can know the length of a certain time period and the specific amount of a certain time by observing the changes of the clock hands that record the amount of time.
Time is different from movement and quantity, and it is opposite to other parts of the world and everything.
Time, like movement and quantity, and other "things" or substances that make up the world and everything have the same essence of objective reality and are a family in a unified world. Time, movement and quantity are closely related to other members who make up the world and everything. They are interrelated and unified.
Regarding the explanation and explanation of time, there are some relevant information as follows:
Explanation: ① Material properties that can be measured by clocks. The occurrence, development and termination of a process not only reflect the continuity of the process, but also reflect the sequence. The continuity of the process is indicated by time interval, and the sequence is indicated by date and time.
(2) The basic form of the existence of moving matter. Time is the continuity, interval and sequence of material movement, and space is the extensiveness and extensibility of material. Time is one-dimensional, that is, irreversible, and space is three-dimensional. Time and space cannot be separated from the movement of matter. Without matter and the movement of matter, there would be no time and space, and without time and space, there would be no matter. Matter is eternal and absolute, and time and space, as the basic form of matter, are also eternal and absolute, but the specific manifestations and characteristics of time and space are diverse, changing and relative.
Time: one-dimensional, irreversible passage.
1. Leisure, leisure
2. Year
3. Time, for example, the current time is 12 o'clock.
Duration, for example, the duration of a class is 50 minutes.
5. Existence corresponding to space: Time is an attribute of the existence of the objective world.
Modern Chinese Dictionary explains that time is an objective form of material existence and a continuous system composed of past, present and future. This is a continuous manifestation of material movement and change.
It is an important factor in the connection between objects and the outside world.
The temporal property of an object can only exist when it is in contact with an external body. The time attribute between objects exists because of the synchronization between objects. Each object affects the time properties of the objects associated with it. They're synchronized.
Like a black hole, time stands still because it is isolated from the outside world. Although foreign objects enter it, they are all in sync with the black hole because of their strong gravity. Therefore, the time attribute of a black hole is only influenced by itself.
What time is it now? "or" how long is it before the new year? "I'm afraid even primary school students think this is a simple question. But if you turn the word order upside down and ask, "What is time? "I'm afraid most people will feel at a loss. That's true. " "Time" is the most important, common and commonly used concept for us: "We should seize time", "wasting time is wasting life" and "time is money" …
People regard time as an object that exists independently of anything else, and it passes endlessly and evenly; In middle school students' mathematics and physics textbooks, time is expressed as a straight line with a starting point, a unit, a direction, no beginning and no end. This is Newton's "absolute time" which accords with people's common sense, and it is also a scientific concept of time that was not generally accepted until the beginning of this century.
Truth is relative, and it always develops with the progress of science. After mankind entered the twentieth century, new achievements and discoveries in physics and astronomy challenged the basic concept of "absolute time". Albert Einstein's special theory of relativity points out that time cannot exist independently without observers of the universe and its events, and time is an aspect of the relationship between the universe and observers. Generally speaking, the measurement time of the same event is always different for different observers with relatively uniform motion. For example, a clock moving at a constant speed relative to the observer always goes slower than a clock stationary relative to the observer. The greater the relative speed of the clock, the closer it is to the speed of light, and the more obvious the effect. In addition, a direct corollary of Albert Einstein's general relativity is that clocks at different heights on the earth's surface have different speeds because of the gravitational field. The higher the altitude, the faster the clock speed, with a difference of about1.09×10-16 seconds/meter (altitude), that is, every time it rises 100 meter, the clock will be faster by one billion. These predictions made by Albert Einstein's theory of relativity have been verified by experiments. In addition, if we admit the "Big Bang" universe model put forward according to Albert Einstein's theory of relativity and the major astronomical discoveries of this century (red shift of spectral lines of galaxies outside the river, microwave background radiation, approximate helium abundance of different galaxies), we must accept that our universe must have a "beginning" (at least 65.438+000 billion years ago), and may even have an end (at least tens of billions of years later).
Fortunately, Albert Einstein's general theory of relativity and quantum mechanics have obtained the latest research results of modern cosmology: the universe we observed (the range is about 65.438+0.5 billion light years) is finite and unbounded, that is, it is finite in time and space scale but has no boundary (or edge), no beginning, no end, no birth and no death! Of course, this is only a relatively new model of the universe, and the scientific predictions made from it have to be verified by actual observations.
To sum up, "What is time?" The essence of the problem is to explore the essence of time, which is only a topic that few scientists and philosophers are keen to study, and it is far from a satisfactory result, so it seems that it will take a long time to explore. Fortunately, for the practical application of time, a conventional understanding is enough. In some fields, it is sometimes necessary to add relativistic correction to time.
In the end, all of us can't understand this thing ~