II. On the periodicities of sunspots

• 1 January 1906
• journal article
• Published by The Royal Society in Philosophical Transactions of the Royal Society A
• Vol. 206  (402-412) , 69-100
• https://doi.org/10.1098/rsta.1906.0016

Abstract

Keywords

• SOLAR
• SUNSPOT
• OBSERVATORY
• WOLFER
• JANUARY
• MITTEILUNGEN
• SYNODIC
• ASTRONOMISCHE