There are many concrete and abstractconcepts, quite familiar and polysemantic, used in many branches of science and everyday life. Among them, and this is a capacious word. To understand what a period is, you can refer to explanatory dictionaries. And they give such an interpretation of this concept.
So, in Dal, we read that it is the time interval that determines the time from one event to another. That is: duration, duration of an event or action.
Ozhegov, for example, is also a period of time (past or present) in which an event begins, develops, ends. That is, it presupposes the dynamics of action.
Most often this concept is used in thissense. That is, we mean a certain time period during which events occur or happen. With respect to time - this is the gap that is opposed to other segments. This is the period during which something happened (according to Ushakov's definition). What is the period? A segment during which a recurring process begins and ends (a scientific definition).
The most commonly used term ingeological and historical sciences. So, there are universally recognized and clearly defined periods of the Earth's history. For example, the Precambrian begins from the formation of the planet before the emergence of the Cambrian (4.6 billion - 541 million years ago). We live in the Quaternary, which began more than 2.5 million years ago and continues today. This is the shortest period in time, but it is characterized by such important events as the emergence and development of mankind, for example.
Historical periods are also typical forthe emergence and development of countries and peoples. What is meant by the periodization of history? This is primarily a conditional division of the historical process into segments that have definite chronological limits. So, in the classical periodization different periods are distinguished: prehistoric and antique, medieval and so on. We live in the newest time.
