Spectrum analysis : six lectures delivered in 1868 before the Society of Apothecaries of London (1885)
Roscoe, Henry E. (Henry Enfield), 1833-1915, Schuster, Arthur, Sir, 1851-1934 · London : Macmillan and Co. · leaf 291
260 SPECTRUM ANALYSIS. [LECT. 7. equator, while shorter curved rays are observed near the poles. No such symmetry is seen during a corona taken during a period of maximum sun-spot, such as is given in Fig. 91 repre- senting the corona of December 22nd, 1870. An intermediate state between the corona… … Fig. 93. represented in Fig. 93. The structural details of the corona as photographed in Egypt during the total eclipse of 1883 during a maximum spot period are well seen in the copper-plate engraving which serves as the frontispiece to this volume. Let us now pass to the consideration of the…
Spectrum analysis
Internet Archive · Smithsonian Libraries · Public domain (published before 1931). Free to use for anything.
