American horological journal, devoted to practical horology (1869)
Miller, George B · New York, G. B. Miller · leaf 131
pposition.The motions of the hands are peculiarly illus-trative of the relative motions of the planets,as 1 to 11.8 nearly ; the watch motion being 1to 12. From the fact that the two orbits arenearly concentric, it follows that the nume-rous eclipses of Jupiters moons can be ob-served both when in… … represents by E E the plane of the ecliptic;M M, the plane of the moons orbit, and F F,the equatorial plane of the primary, N and Sbeing the polar axis. It will be obvious thata body passing from E to E must be eitherprojected on the disk or be eoUpsed by the AMERICAN HOROLOGICAL JOURNAL. 167…
Clocks and watches
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