Colbert, E[lias] [from old catalog] · Chicago, G. & C. W. Sherwood · leaf 12
esents the globe,with the North Pole (at A) pointing in an obliqueposition. The curve BCD represents one half ofthe equator; the globe rotates in the direction Bto C, C to D, the journey from B to C being madein about six hours, that from C to D in six hours,and the entire rotation, from B to B… … globe, cutting the Equator in the points B and D.If the earth simply rotated on her own axis, then,to a spectator at E, it would be noon when the Sunwas at S, the luminary then being in a right linewith the earths centre, and F, which is a point inthe meridian F E A I C G ; six hours afterwardsthe…
Astronomy · Stars
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