The New Encyclopędia BritannicaEncyclopędia Britannica, 1983 - Encyclopedias and dictionaries |
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Page 310
... activity that occurred in 1958 the density was extraordinarily high , it came down to a very low val- ue during the 1964 minimum of solar activity . There is , thus , a close correlation with solar activity . It is the ultra- violet ...
... activity that occurred in 1958 the density was extraordinarily high , it came down to a very low val- ue during the 1964 minimum of solar activity . There is , thus , a close correlation with solar activity . It is the ultra- violet ...
Page 374
... activity is closely associated with solar activity . In particular , a stormy solar wind that is gen- erated by solar flares activates this gigantic cathode - ray tube and causes intense auroral display . During the last ten years , a ...
... activity is closely associated with solar activity . In particular , a stormy solar wind that is gen- erated by solar flares activates this gigantic cathode - ray tube and causes intense auroral display . During the last ten years , a ...
Page 376
... activity ) of the aurora in the auroral oval , he could see homogeneous arcs , or relatively quiet forms , all along ... activity . The surges and drifting patches may still be seen at this time in the evening and morning twilight skies ...
... activity ) of the aurora in the auroral oval , he could see homogeneous arcs , or relatively quiet forms , all along ... activity . The surges and drifting patches may still be seen at this time in the evening and morning twilight skies ...
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aesthetic ancient appear areas arms artists aschelminths Asia Asian associated atmosphere atoms become body called Central centre century changes China continued countries criticism culture early Earth East economic effect electrons elements energy example exist field forces France function Games groups head human important increase India individual industrial influence Italy Japan known later less light lines living lower major mass means ment metres military mountain nature North objects observations occur organization original painting particular percent period physical Pleistocene political population position possible practice present produced radiation range region relatively remains represent result schools social society sometimes sources South Soviet species stars structure style surface temperature theory tion traditional types United usually various West western