Solar activity, revolutions and cultural prime in the history of mankind
Russian scientist Tchijevskij investigated almost 100 years ago (suggested for Nobel prize) relationships between solar activity, cycling with the period around 11 years, and the status of mankind. He found „social excitation“, as revolutions and wars, at the time of solar maxima and peaceful activities like flourishing of arts at minima.The present paper explores whether such a parallelism applies also to the 500 years´ (semimillenial) cycling of solar activity. The present author obtained, using the cosinor analysis, significant positive anwer. It is hypothesized that one of the responsible factors could be solar impact on geomagnetic field.