Both the Ptolemaic and Copernican Models Required Equants

question 33

Essay

Both the Ptolemaic and Copernican models required equants.What assumption and observed phenomena necessitated these additions?

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Definitions:

Flexion and Extension

Movements that decrease (flexion) or increase (extension) the angle between the bones of a joint.

Inversion

The action of inverting something or the state of being inverted, such as turning the sole of the foot inward.

Eversion

The movement of turning a body part outward or inside out, often referred to in the context of ankle movements.

Temporomandibular Joint

The joint connecting the lower jaw (mandible) to the skull, allowing for movement and function of the jaw.