The Sun (Classic Reprint) - Softcover

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Excerpt from The Sun

Langley's Bolograph; Orbits of an Earth and a Moon for which five months equal one year; Orbits of the Earth, Mars, and Eros; Fraunhofer's Map of the Solar Spectrum; Fraunhofer's B line, under high dispersion; Pressure displacement in Iron Arc (Duffield), Zeeman Effect on the Iron Spark (King); Langley's Drawing of Sun Spots and details of Solar Surface; Direct Photograph of Sun (Meudon), March 21, 1910; Photograph of Sun in Calcium Light (K3), (Meudon), March 21, 1910; Photograph of Sun in Chromospheric Layer of Hydrogen Light (Ha), (Meudon), March 21, 1910; Photograph of Sun in Hydrogen Light (Ha), showing vortices surrounding Sun Spots (Mount Wilson); Photograph of Prominences (Ha) with Sun's disc screened (Mount Wilson), September 20, 1909

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