National Repository of Grey Literature 43 records found  beginprevious24 - 33next  jump to record: Search took 0.01 seconds. 
How did the last cycle of solar activity end and the new one begin
Bumba, Václav ; Garcia, A. ; Klvaňa, Miroslav
We demonstrate that also during the period of activity minimum on solar surface two active longitudes exist, and that active regions of both cycles closely correlate with them. We study the development of the magnetic fields in this transition phase and, above all, the influence of convection on their distribution.
The influence of the reference zero-velocity on the model of the vector velocity field in a symmetric sunspot
Klvaňa, Miroslav ; Bumba, Václav ; Krivcovová, N.
It appears that the occurrence of the vector velocity in an umbra caused by the shift of the Doppler-velocity zero-reference level can be successfully corrected by the position change of the point of symmetry of the spot. In such a case, the character of the spot vector velocity field will= be conserved.
Decreased importance of the last solar cycles in the number of active regions of sunspots and flares
Křivský, Ladislav
The dicreasing trend is demonstrated by histograms of the monthly date of both events in cycles.
Extrems of the solar activity derived from cosmic ray level or sun observations in the interval of last 30 000 years
Křivský, Ladislav
The maxima of the solar activity are connected with minima at cosmic ray level derived from isotopes in the icecores of glaciers.
Time and man
Klimeš, J. ; Rajchl, Jaroslav
Problem of a non-linear form of time is discessed from a philosophical and mathematical point of view. Comparison with the Gödel's results is presented.

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