MAKE A MEME
View Large Image
| View Original: | Climatic_Cycles_and_Tree-Growth_Plate_9.jpg (1548x1964) | |||
| Download: | Original | Medium | Small | Thumb |
| Courtesy of: | commons.wikimedia.org | More Like This | ||
| Keywords: Climatic Cycles and Tree-Growth Plate 9.jpg en Plate 9 A Periodogram of the sunspot numbers 1755-1911 Corrugations show periods The numbers give length of period in years The white line is the year 1830 and shows phase B Differential pattern used in making the periodogram consisting of the sunspot curve mounted in multiple C Same pattern photographed out of focus to show discontinuities in the vertical lines D Sweep of sunspot numbers 1755-1911 E Differential pattern of sunspot numbers made by the periodograph process 1919 Climatic Cycles and Tree-Growth Andrew Ellicott Douglass PD-old-100 Climatic Cycles and Tree-growth Solar cycles | ||||
