The heat the earth normally gets from the sun is the equivalent of 250 trillion horsepower. But Dr. Abbot found that on any given day solar heat might vary as much as 5% from normal. One reason: sunspots, which throw out great conical sprays of electric particles that interfere with solar rays. When Dr. Abbot [...]
Posts Tagged ‘Sunspots’
15 Dec
Dr. Charles Greeley Abbot and the Jesuit astronomers in Spain: Solar radiation and earth’s weather
6 Jul
Debrecen Photoheliographic Data: Sunspot images and areas
A student of mine is now working on the Debrecen photoheliographic data. We want to propose new statistical parameters for describing sunspots, in addition to the traditional sunspot number. The standard definition of a sunspot number is given by Rudolph Wolf in 1848: where is the number of sunspot groups in the solar disk, is [...]
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