Natural phenomena refer to all kinds of situations in nature that are completely unaffected by human subjective factors, such as wind, rain, lightning, snow, solar eclipse and lunar eclipse.
For example, whether the moon is cloudy or sunny, there are four seasons in a year, the climate is warm and cold, there will be days and nights, and there are meteors, aurora and other phenomena, so natural phenomena are beyond the control of the earth.
Natural phenomena refer to wind, rain, thunder and lightning, rain, snow, hail, meteor, aurora and so on. And the ebb and flow of the sea, earthquakes and tsunamis. Of course, there are natural phenomena that you don't often see, as long as they are not artificially controlled, they are all natural phenomena.
In addition, tsunami is also a natural phenomenon, so is volcanic eruption. In a word, natural phenomena are beyond human control and beyond human reach. For example, earthquakes are so advanced in technology that it is impossible to predict them in advance.
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1, the main goal of mathematics is the public interest and the explanation of natural phenomena. Fourier transformation
2. Different natural phenomena have different optimal observation distances and scales. It is not necessarily that the closer the distance, the better the observation. -Li Xiaowen
3. Solving the problem of language evolution is as difficult as solving the mystery of species evolution; The evolution of language is not only a social phenomenon, but also a natural phenomenon, and it is also the result of human psychological development and historical and cultural evolution. Because the origin and change of language has its internal causes and external influences, it increases the complexity of language evolution. Zhou Haizhong