How many years is the activity cycle of sunspots?

The cycle of the sun itself also has an impact on life. The active period of sunspots is 1 1 year. When the sun shoots huge energy into space, black freckles can be observed on its surface. In 1930s, A.L. Techeyevsky, a Soviet historian, claimed that he had discovered the internal relationship between the solar rhythm and wars and epidemics on the earth. Japanese professor Maki Takata pointed out that there is some connection between human blood and the sun. He used the methods used by gynecologists to detect menstrual cycle, including the comparative test of serum proteins of both sexes. 1938 65438+ 10, many hospitals in the world reported that the test results of men and women are always changing. After more than 20 years of verification and analysis, Takada found that these changes are most prominent when the sunspot group passes through the center of the sun, that is, when the sun pours dense rays at the earth. The sudden increase in such reports in hospitals is also consistent with the sudden outbreak of sunspot activity after years of calm.

Takada also noticed that his test results always mutate within a few minutes before the sun rises every day, as if the blood itself had "foreseen" that the darkness was about to pass. Takada claimed: "Man is an active sundial." He also talked about the problems of animals and plants, and thought that all life phenomena seemed to be in line with the rhythm of the sun.