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If I'm reading this correctly, would the correct translation of "antiskios" be "counter shadow" or should it be something less literal like "before shadow" or "against shadow"? In other words "the angle that precedes before the shadow."

In any case, this was a fantastic read. It is difficult to imagine the different planes of an armilary sphere, but the text is bracingly clear.

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An amazing article that gives the reader a glance at a whole world of scholarship.

In "antiscia", Ptolemy used it as meaning "opposite of" when referring to constellations. This same use would probably mean "opposite of the shadow".

I would translate as light source. Literally anti-shadow.

Requiem for the human mind

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