Stars and telescopes; a hand-book of popular astronomy founded on the 9th ed. of Lynn's Celestial motions (1901)
Todd, David P. (David Peck), 1855-1939, Lynn, William Thynne, 1835-1911 · Boston, Little, Brown · leaf 96
seen only nearthe Suns limb, actually extend all the way across its disk, inapproximately the regions of greatest spot-frequency. By thecourtesy of Professor Hale, both these results are here illus-trated. The bright zones of faculas are related to the promi-nences— perhaps identical with them; and… … SUN — SPECTROHELIOGRAM BY DESL4NDRES {Photographed by the brilliant K lineattributed to calcium) SOLAR CHROMOSPHERE— DESLANDRES ( The protuberances rise to a height 0/about30,000 miles)
Astronomy
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
