Chinese name: time
English name: time
Definition: time is the time interval from the occurrence to the end of an event
Applied discipline: physics (first-class discipline)
Catalogue
Time concept
Time meaning
Concept
How to manage time
Mathematical logic
. The nature
the philosophical concept
the explanation of "complete civilization" on time and the relationship between cognition and human lead (age)
how to increase one's lead (time)
how to save time
time unit
China ancient time unit
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points
. > how to manage time
mathematical logic
the physical abstract concept of "time"
the theory of analyzing time
the establishment of analyzing time
the interpretation of time by the philosophical concept of "complete civilization"
the relationship between cognition and human lead (age) how to increase one's lead (time) and how to save time and time units in ancient China. The concept of time in this paragraph
Time refers to all the macro-continuous and irreversible changes in the material state, which is the general term for the measurement of continuous events with the same nature. Time is a description of the process of material movement, while time refers to artificial division. Time is the division and division of material movement process by thinking. To explore the origin of the concept of time, we can start from the time units "days" and "years" recognized by the earth people. Since the birth of mankind, people have felt the phenomenon of day-and-night cycle, and defined a day-and-night cycle as a time, and gradually realized that this is the performance of the earth's rotation (a kind of thing). Furthermore, people understand that the earth is revolving around the sun from behind the phenomena of spring, summer, autumn and winter, and the cycle of the sun, moon and stars, and define the process of the earth's revolution as one year. Not only that, people also divide a day into 24 hours or 12 hours, and divide a year into 4 seasons, 12 months and so on. People also compare the length of a year with that of a day, and one year (the process of the earth's revolution once) corresponds to about 365 days. Through the analysis of time units "day" and "year", we can see that people's understanding of time is actually carried out around the existence process of various things. The concept of time is gradually formed and perfected by defining, dividing and comparing the existing process of things on the basis of understanding things. The existing process and state of things are nothing more than movement, change or stillness. Things that change in motion can have both spatial displacement and character change. Some things show periodic movement or change, while others are not obvious or not. The existence process or stage of things with obvious periodic changes is often used as the basis for measuring the length of time. For example, the earth's rotation and period of revolution, the movement period of a simple pendulum, the oscillation period of atoms and so on. Although people have established the concept of time by observing the movement and change of things, it does not mean that there is no time without movement and change or that stillness is meaningless to time. Static state is also a form of things, such as the molecular structure of diamonds, which is generally stable under normal circumstances, otherwise people will not say that "diamonds will last forever." Therefore, no matter whether things are moving or static, as long as things exist, they can be described by time, that is, the concept of time should also reflect the static state of things. It is preliminary and one-sided to base the concept of time only on the movement and change of things. If we can further realize that stillness is also a state in the process of things' existence, it will be a progress in the concept of time. One of the basic purposes of establishing the concept of time is to compare time, that is, to compare the sequence of things or whether they are at the same time. In order to facilitate mutual communication and activities, people usually take the beginning and end of some landmark things as a sign of timing. For example, the year of Jesus' birth is the beginning of the year, the year when Sun Yat-sen proclaimed the founding of the Republic of China is the beginning of the year of the Republic of China, and the sound and smoke of starting guns on the sports ground are the beginning of a certain competition. Another basic purpose of establishing the concept of time is to measure and compare the length of the existence process of various things. People generally don't take the existence process of static things as the basis for keeping time, which may be a factor that people regard time as "the existence form of motion" for a long time. People usually choose something with stable periodic movement and take its movement period as the timing basis. For example, the moon phase, standard watch, sundial, mechanical clocks, quartz clocks, atomic clocks, etc., these things have become people's natural or artificial timers. Timer is a device that people measure the length of the existence process of other things through the existence process (especially periodicity) of one (kind) changing thing under certain conditions. It should be noted that the time measured by any timer is a process of presenting itself, and does not necessarily represent the process of other things. Even so, people can still describe the length or stage of the existence process of other things by the running state of a timer under certain conditions or through certain transformation. For example, about 365 earth rotation periods (days) correspond to one earth period of revolution (year), about 29.5 days correspond to a new moon, and stopwatches are used to measure athletes' achievements. It can be seen from the above description that the concept of time should not be a consciousness invented by people out of thin air, but comes from people's understanding of the existing process of various things and is produced through induction and summary. Therefore, the concept of time corresponds to the objective reality-the existence process of things. In addition to understanding "things"-objective things in physical form, such as stars, planets, molecules, atoms and cells, people can produce corresponding concepts, and they can also produce corresponding concepts after understanding objective facts that are not "things". For example, the physical quantities corresponding to the seven basic units in the international system of units: time, length, mass, current intensity, temperature, luminous intensity, quantity of matter, and people's concepts of space, information and consciousness also reflect the objective facts of non-physical forms. Therefore, it is obviously absurd to deny the objectivity of the concept of time on the grounds that time is not a "thing". People not only use time to describe the existence process of material things, but also the existence process of other immaterial things. For example, in terms of consciousness, when did Marxism come into being and how long did it last? If people realize that the existence process of things is the origin of time, it is not difficult to define time again. Time is the existence process of things and the natural attribute of all things. As one of the seven basic dimensions in the international system of units, people use time to measure the length and order of the existence process of various things, including the speed of movement and change.