Direct photograph of sunspot group

Direct photograph of sunspot group 1908, April 30, 6h. 25m. A.M. Pacific Standard Time. Fig. 1. 'Solar Vertices and Magnetic Fields' presented to Royal Institution of Great Britain Weekly Evening Meeting, Friday May 14, 1909, Credit Line: The Hale Observatories, courtesy of AIP Emilio Segrè Visual Archives
Abstract/Description: Direct photograph of sunspot group 1908, April 30, 6h. 25m. A.M. Pacific Standard Time. Fig. 1. 'Solar Vertices and Magnetic Fields' presented to Royal Institution of Great Britain Weekly Evening Meeting, Friday May 14, 1909
Subject(s): Astronomy
Electromagnetism
Nuclear physics--Research
Observatories
Diagrams
Mount Wilson Observatory
Date Created: April 30, 1908
Credit Line: The Hale Observatories, courtesy of AIP Emilio Segrè Visual Archives
Catalog ID: Mount Wilson Observatory H20