National Geographic : 1925 Jan
THE NATIONAL GEOGRAPHIC MAGAZINE efif,'I,posfi6 .. v arth's orbit hdoow irt Searthv o Note the inclination of noon orbit to earth's orbit. Note also position off//hs oa dfertent stages z earl/sA pah rounds. in main diagram. fSu2__:'v "Mooin The distanee between eanfh e moon varies. Here moon. cuts plane of earth's orbit when: at nearest point to earth,enablingmoons umbra to reaeh death, dius totality obstructing sun's htiht Zyee euts I orbit orb- ,oon cuts plae of eart' Moon's orbit in position enabling sun, orbit when at f est point moon, and earth to get in algnment. Srtti wn from eart,m&akn $7ci- -I m .* , "... r moons umbra foo 7 ' .. ... .... , m, ),ai (lllllllllulllllI (' shoortorbit to pea .. , f4fe rl ifa ... triall obstruction of lght by only, a Monris by permba.1 orbi ttbliaf © National Geographic Society Computed and drawn by C. E. Riddiford and A. II. Bumstead A PICTORIAL DIAGRAM OF TlHE CAUSE OF ONE OF TIIE MOST DRAMATIC SPECTACLES IN NATURE Those who observe the great celestial performance this month (see text, page 97) will never see it again in the same "theater," for the sun and moon never repeat their "act" along the same circuit within the span of a generation. A clear sky will provide a spectacular event for all beholders along the path of totality. The upper half of the above illustration is diagrammatic and is not drawn to scale.