Emerson, William, 1701-1782 · London : Printed for J. Nourse · leaf 242
hour Circles ; are circles palTingthro the poles of the world, as Pop, PE/*, <5cc. ^. Sclfiitial Colure, is a meridian paffing thro thefolftitial points, as Ps/>. 4. Eqtrinc^ial Colure, is a meridian pafling thro*the equinoftial points, P Cp. 5. Ecliptic is the circle thro which the fun…
Mechanical engineering
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