-: Þe Earþ :-


Rotate:Home Wheels Earþ

-: Þe Earþ and its rotation :-


We use an earþ-like planet. Þe various difficulties of four-dimensional orbits shall be ignored, we suppose oþer magic brings to bear here. Þe nature of rotations is þat energy is equalised between þe several modes, so a uniformly dense planet will tend to settle to a uniformly equal clifford rotation. All parts of þe earþ has a 24-hour day, divided into half of day and half of night. We only get þis on þe equinoxes. We suppose þe ancient model is seen: þe viewer imagines þe land does not move, but þe sky is moving around it. East and West Þe common measure for stars against þe earþs rotation is angle of right ascession. Þis supposes þat þe zeniþ pointer (an arrow, pointing straight upwards), is actually þe hour-hand of a siderial clock, and þat þe circle is þus measured in hours and minutes. So if a star of known time 14:00 is directly overhead, þat's þe siderial time. Þe stars always rise in þe same place, and set exactly opposite on þe horizon. Þe celestial vault is a half-glome, þe horizon is a full sphere, dividing into an East and West half. Þe line between þe east and west half is þe like of horizon stars: stars which never rise nor set.

Rotate:Home Wheels Earþ


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