Stars and telescopes; a hand-book of popular astronomy, founded on the 9th ed. of Lynn's Celestial motions (1899)
Todd, David P. (David Peck), 1855-1939, Lynn, William Thynne, 1835-1911. Celestial motions · Boston, Little, Brown and company · leaf 102
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… … SI N — SPECTROHELIOGRAM BY DESLAXDRES {Photographed by the brilliant K lineattributed to calcium) SOLAR CHROMOSPHERE— DEFLANDRES ( The protuberances rise to a height of about30,000 ;;;..
Astronomy
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