ScienceJohn Michels (Journalist) 1942 |
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Page 277
... observations show that the expected decline in solar activity continues , though there have been four notable periods of resuscitated activity . Of the four big spot groups the area of which exceeded 1,000 millionths of the hemisphere ...
... observations show that the expected decline in solar activity continues , though there have been four notable periods of resuscitated activity . Of the four big spot groups the area of which exceeded 1,000 millionths of the hemisphere ...
Page 405
... observations appear in the Har- vard Annals , and Nos . 2 , 3 and 4 of Volume 110 have been issued . Instead of containing the observations for each quarter separately , individual numbers now cover six months or more of observations ...
... observations appear in the Har- vard Annals , and Nos . 2 , 3 and 4 of Volume 110 have been issued . Instead of containing the observations for each quarter separately , individual numbers now cover six months or more of observations ...
Page 406
... observations . He ob- served on 143 nights , and reports having spent 207 actual hours at observing , an average of twenty stars per hour . This is a remarkable record , and well at- tests the value of having a finely mounted and prop ...
... observations . He ob- served on 143 nights , and reports having spent 207 actual hours at observing , an average of twenty stars per hour . This is a remarkable record , and well at- tests the value of having a finely mounted and prop ...
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