The Adolfo Stahl lectures in astronomy, delivered in San Francisco, California, in 1916-17 and 1917-18, under the auspices of the Astronomical Society of the Pacific (1919)
Astronomical Society of the Pacific, Aitken, Robert Grant, 1864-1951 · San Francisco Stanford University Press · leaf 105
ithin which the eclipse is visible as partial is.of course, much wider, extending indeed several thousandmiles on either side of the shadow track. 58 The Adolfo Stahl Lectures I have said that the ancients had discovered that an eclipsereturns after a period of alx)ut eighteen years, a period… … Fig. 6. Total Eclipse of June 8, 1918.The nearly parallel lines across the center mark the shadow path; thelonger, closed curves indicate within wiiat wide limits the eclipse wasvisible as partial. The Moon makes the circuit from new moon back to newin what we call our ordinary month, 29.53059…
Astronomy
Internet Archive · Gerstein Library, University of Toronto · Public Domain Mark 1.0. Free to use for anything.
